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Hi, this is Alex Cantrowitz. I'm the host of Big Technology Podcast, a longtime reporter and an on-air contributor to CNBC.
And if you're like me, you're trying to figure out how artificial intelligence is changing the business world and our lives.
So each week on Big Technology, I bring on key actors from companies building AI tech and outsiders trying to influence it.
Asking where this is all going, they come from places like Nvidia, Microsoft, Amazon, and plenty more.
So if you want to be smart with your wallet, your career choices, and meetings with your colleagues, and at dinner parties, listen to Big Technology Podcast or ever you get your podcasts.
Live air quality index AQIMAP Aurora Colorado today from filterby.com
Checking Aurora's air quality today?
As a company that's spent over a decade obsessed with the air people breathe, we can tell you that what's happening outside an Aurora directly affects what's circulating inside your home.
Front-range communities deal with a unique combination of Denver Metro ozone, seasonal wildfire smoke, and high altitude UV that accelerates smog formation.
And our team sees it reflected every year in the surge of Colorado customers upgrading to higher-merb filters when AQI levels spike.
Use our live AQIMAP below to see real-time pollution levels across Aurora right now.
Then take the next step most people miss. Make sure your HVAC system is equipped to handle what's coming through your vents.
After manufacturing millions of air filters in the USA and shipping them to homes just like yours, we've learned that the families who stay ahead of poor air quality days, not just react to them, are the ones breathing easier all year long.
Quick answers. Live air quality index AQIMAP.
Now today in Aurora Colorado, Aurora's live AQIMAP shows real-time pollution levels across the city right now, measured on a scale of 0 to 500.
The lower the number, the cleaner the air.
What to know at a glance? 0 to 50. Green. Good. Enjoy normal activities. 51 to 100. Yellow. Moderate. Your HVAC filter is already working harder than you think.
101 to 150. Orange. Unhealthy for sensitive groups. Close windows and run your system continuously.
151 plus red. Unhealthy for everyone. Your filter becomes your first line of defense. Our recommendation for Aurora homes. MIRB. 11 minimum for everyday protection.
MIRB 13 during ozone season and wildfire events. Check the map above. Then make sure your filter matches what Aurora's air is throwing at your HVAC system today.
Top 5 takeaways. Aurora's air problem is chronic. Ranked sixth worst for ozone three years straight. Indoor air is two to five times worse than outdoor air.
Closing windows alone isn't enough. Prepare before the spike, not after. The right filter should already be installed. MIRB 8 is the baseline. MIRB 11 is our front range minimum. MIRB 13 for the smoke and ozone season.
Make the AQI a daily trigger. Check the map. Then make sure your filter matches. Understanding Aurora's air quality index today.
The air quality index is a standardized scale from zero to 500 that tells you how clean or polluted the air is in your area and what health effects you might experience.
For Aurora residents, the number you see on the map above reflects real-time measurements of five major pollutants. Ground level ozone, particulate matter, PM2.5 and PM10. Carbon monoxide, sulfur dioxide and nitrogen dioxide.
An AQI reading under 50 means the air is good. Once it climbs above 100, sensitive groups, including children, older adults and anyone with asthma or respiratory conditions, should start paying closer attention. Why Aurora's air quality fluctuates?
Aurora sits at the eastern edge of the Denver metropolitan area and that geography matters. Vehicle emissions along the I-2, 125 and E-4-70 corridors combined with industrial activity and Colorado's high elevation create conditions where ground level ozone forms faster than in many other US cities.
Summer months tend to bring the worst readings as heat and sunlight cook those emissions into smog. Then there's wildfire season when smoke from fires burning hundreds of miles away can push Aurora's AQI into unhealthy territory for days at a time.
Even winter isn't a free pass as temperature inversions can trap particulate matter close to the ground across the front range. What your AQI reading means for indoor air? Here's something we've seen firsthand after shipping millions of filters to Colorado homes. Most people check the AQI, decide to stay indoors and assume they're protected.
The reality is more complicated. Your HVAC system pulls in outdoor air and without the right filter, those same pollutants, fine particulate matter, ozone by products, smoke particles, cycle through your home every time your system runs. On days when Aurora's AQI is elevated, your air filter is doing the heaviest lifting and a standard fiberglass filter simply isn't built for that job.
How to protect your home on high AQI days? Run your HVAC fan continuously to keep air cycling through your filter rather than sitting stagnant.
And make sure you're using a filter rated to capture the pollutants that actually affect Aurora. A Merb11 or Merb13 filter traps the fine particles and allergens that lower rated filters let pass right through.
We manufacture our filters in Merb8, Merb11 and Merb13 ratings so you can match your level of protection to what the AQI map is telling you on any given day.
If wildfire smoke is in the forecast, that's when stepping up to a Merb13 makes the biggest difference. Stay ahead of Aurora's air quality, making it part of your routine.
The same way you check the weather, puts you in control of your family's air quality year round.
Bookmark this page for a quick daily check and pair it with a filter replacement schedule that keeps your HVAC system ready for whatever Aurora's air throws at it.
With over 600 sizes available and free direct-to-door shipping from our US factories, keeping your home protected has never been easier.
After more than a decade of manufacturing air filters and shipping millions to homes across Colorado, we've seen a clear pattern.
The families who pair their daily AQI check with the right Merb rated filter aren't just reacting to bad air days, they're preventing them from becoming an indoor problem in the first place.
Filter by air quality team, seven air quality resources. Every Aurora homeowner should have in their back pocket.
Look, we get it. You Googled Aurora's air quality because you want a quick answer, not a research project.
But after spending over a decade helping Colorado families breathe better air at home, we've learned that the people who really stay on top of their air quality don't just check one source and call it a day.
They know where to look, what the numbers actually mean, and when it's time to take action indoors, we pull together the seven resources that matter most so you can skip the guesswork.
One, airnow.gov, your go-to for real time AQI data.
Straight from the EPA EPA's interactive map shows current AQI readings with pollutant specific layers for ozone and particulate matter, plus a 24 hour time slider so you can see how Aurora's air has changed since this morning.
No ads, no spins, just the official numbers from the agency that sets the standards. We check it ourselves before making filtration recommendations to Colorado customers.
Source. US. Environmental Protection Agency 2, Colorado CDPHE Air Quality.
Page. The statewide view that hits close to home. Living along the front range means your air quality story is never just about Aurora.
It's about what's blowing in from Denver, drifting down from mountain wildfires or building up during an ozone action day.
Colorado's health department tracks all of it, including front range advisories, the Colorado smoke blog, prescribed fire maps, ozone action day tallies, and live data from monitoring stations across the region.
When wildfire season hits and our Colorado orders for MIRB 13 filters spike, this is usually the resource that's driving the urgency.
Source. Colorado Department of Public Health and App Environment.
3. City of Aurora Air Quality Network. Block by block.
Data for your side of town, the city runs 15 government-sponsored air quality monitoring stations across every ward, measuring particulate matter, volatile organic compounds, ozone, carbon monoxide, and nitrogen dioxide in real time.
That means you're not just seeing a metro-wide average. You're seeing what's actually in the air near your neighborhood. We wish every city offered this level of detail.
It makes choosing the right filter for your specific conditions a whole lot easier.
URL, HTTPS, www.aroragov.org, residents, environmental, posh resources, air quality, four, EPA, AQI basics, guide, finally understand what those color codes mean.
We talk to homeowners every day who check the AQI but aren't sure what the number actually tells them. No shame in that. It's not exactly intuitive.
The scale runs from 0 to 500, with readings at or below 50, meaning good air quality and anything above 300 considered hazardous.
This quick EPA guide breaks down every color-coded category and spells out when you should change your plans. Think of it as the cheat sheet that makes the map above actually useful.
Source, US, environmental protection agency, air now five, EPA patient, exposure and AQI activity guide must read.
If anyone in your home is in a sensitive group, if you've got kids, aging parents in the house or anyone dealing with asthma or heart issues, the standard AQI advice doesn't go far enough.
The EPA's clinical guide explains that when AQI levels hit the 101 to 150 range, people with heart or lung disease, older adults, children, people with diabetes and lower income communities should reduce prolonged or heavy exertion outdoors.
It's also the reason we always recommend stepping up to at least a Merb 11 for households with sensitive family members because staying inside only helps if your indoor air is actually clean.
Source, US environmental protection agency, health professionals, six, IQ, air, aurora, see whether today's reading is normal or a red flag.
A single AQI number doesn't tell you much without context. We use trend data when advising customers on whether a Merb 8 is sufficient for their area or whether they should be running a Merb 13 year round.
Spoiler, if you're in aurora, the answer is usually the latter. Source, IQ, air, seven, filter by where checking the AQI turns into actually protecting your home.
This is the part most air quality pages leave out, and it's the part we know best.
After manufacturing millions of filters in our US, factories and shipping them directly to homes across Colorado, we've seen the pattern play out every year.
AQI spikes, homeowners close the windows, but the HVAC system keeps pulling those same pollutants inside. That's the gap we fill.
Our Merb 8, Merb 11, and Merb 13 filters are built to capture the exact particles that AQI maps measure, find particulate matter, smoke, ozone by products and allergens.
Pick the rating that matches what today's map is showing you, and we'll ship it directly to your door with free delivery and no middlemen.
Because knowing what's in the air is important, but doing something about it is the whole point.
Source, filter by US manufactured air filters, better air for all.
What the data tells us, and what we've seen.
First hand in Colorado homes, we've spent over a decade shipping filters to front-range homes.
The numbers from federal and nonprofit sources back up exactly what we see in our order data and customer conversations every season.
One, Aurora sits inside the sixth most ozone polluted metro in the US three years running.
The American Long Associations 2025, state of the air.
Report ranked the Denver metro area sixth worst nationally for ozone pollution for the third consecutive year.
We could see it before the report confirmed it.
Every summer our Colorado orders shift heavily toward MIRB-13 filters starting in late May and don't taper off until October, tracking almost perfectly with ozone season.
This isn't a fluke year.
Nationally, 156 million Americans, 46% of the population, live in areas with unhealthy air pollution levels, and Aurora is firmly inside that footprint.
What we tell our Colorado customers, run a MIRB 11 at a minimum, step up to MIRB-13 during summer.
The data in our own shipping trends tell the same story.
Source, American Long Association 2025, state of the air report.
Two, the federal government has classified the front-range as failing ozone standards.
Twice, two federal benchmarks.
Two failing grades, 2015, ozone standard.
In July, 2024, the EPA reclassified the Denver metro jaw northern front-range from moderate to serious.
Non-attainment based on monitoring data from 2021, 2023, showing the region would not meet federal limits.
2008, ozone standard, the EPA had already escalated the classification from serious.
To severe in 2022, in practical terms, Aurora's air quality isn't just bad on occasional spike days.
It's been formally documented as chronically exceeding levels the federal government considers safe.
We've watched this progression play out in how our customers buy.
Five years ago, most Aurora area orders were MIRB-8.
Today, the majority are MIRB-11 and MIRB-13.
Our customers figured out what the EPA confirmed.
Standard filtration isn't enough for front-range air.
Source, Colorado Department of Public Health and Deaf Environment.
Three, your indoor air is likely.
Two to five times more polluted than the air outside.
This is a statistic that changes the conversation for most of our customers.
The EPA reports that Americans spend approximately 90% of their time indoors,
where some pollutant concentrations are often two to five times higher than typical outdoor levels.
The people most vulnerable, young children, older adults and those with cardiovascular or respiratory disease
tend to spend even more time inside.
We hear the same thing from Aurora families every wildfire season.
We close the windows so we should be fine.
After working with millions of homeowners, here's what we can tell you.
Closing windows is only half the equation.
Your HVAC system keeps pulling and recirculating air,
including whatever infiltrates through ducts and gaps.
A basic fiberglass filter rated below MIRB-8 catches the big stuff,
but lets fine particulate matter pass right through.
That's the gap we built our product line to close.
Three MIRB ratings, over 600 sizes, all manufactured in our U.S.
Factories, because the EPA's data makes it clear your filter
is the last line of defense between outdoor pollution and your family's lungs,
source, U.S., environmental protection agency, indoor air quality.
Final thoughts in opinion after more than a decade of manufacturing filters
and shipping them to Colorado homes, we've reached a conclusion.
Most air quality pages won't tell you.
Checking Aurora's AQI is important, but it's not enough.
Most resources stop at the outdoor number.
They'll tell you the AQI is orange and advise you to limit outdoor activity.
Solid guidance, but it leaves out the most actionable step a homeowner can take,
making sure the air inside your home is actually cleaner than what's outside.
Here's what we've learned working directly with front-range families.
Most homeowners overestimate what their current filter is doing.
Standard fiberglass filters protect your HVAC equipment, not your lungs.
They do almost nothing for the fine particles and smoke that the AQI actually measures.
The family is breathing the best air prepared before the spike, not after.
Customers on a recurring MIRB, so their teen delivery don't scramble when wildfire smoke rolls in.
Their system is already equipped.
Aurora's air challenges aren't going away.
The EPA has downgraded the front-range twice.
The Lung Association has ranked Denver Aurora 6th worst for ozone three years straight.
Longer wildfire seasons and continued corridor growth mean filtration is becoming more important, not less.
Our honest take, treat the AQI map above as a trigger, not just a tracker.
Mwah.
When that number climbs, think about what's happening inside your house,
and whether your filter is up to the task.
What to do next?
Three steps to cleaner indoor air.
Today you've checked the AQI.
You've seen the data now turn awareness into action.
Step 1.
Bookmark this page.
Make Aurora's AQI part of your daily routine.
Today's reading tells you how hard your HVAC filter is working, and whether it's enough.
Step 2.
Check your current filter.
Pull it out and look for two things.
MIRB rating.
Below MIRB 8 or unlisted, it's not capturing the fine particles driving Aurora's AQI.
Condition.
Grey or matted.
It's past due.
Your system is working harder and filtering less.
Your filter size is printed on the frame.
We carry over 600 sizes, including custom options.
Step 3.
Match your MIRB rating to front-range air.
MIRB 8.
Baseline protection.
Capture's dust, pollen, and mold.
Good for mild AQI days.
MIRB 11.
Our most popular for Colorado.
Trap smog particles, pet dander, and fine allergens.
Our minimum recommendation for sensitive households.
MIRB 13.
Maximum residential protection.
Capture's smoke, bacteria, and ultra-fine particulate matter.
What we recommend for Aurora homes that take air quality seriously.
Ready?
Visit filterby.com, enter your size, pick your MIRB rating,
and we'll ship factory direct to your door with free delivery.
Set up auto deliveries so your next filter arrives on schedule.
No scrambling when the AQI spikes.
Frequently asked questions.
Question.
What is the AQI and what do Aurora's numbers mean?
Answer.
The AQI scale runs from 0 to 500.
Lower is better 0 to 50.
Good.
51 to 100.
Moderate.
101 to 150.
Unhealthy for sensitive groups.
101 plus.
Unhealthy for everyone.
After a decade helping Colorado homeowners,
we've learned most people wait until orange to act,
but even yellow readings mean your HVAC is pulling ozone
and fine particles through your home every cycle.
Question.
Why is Aurora's air quality worse than that
of other Colorado areas?
Answer.
Location.
Aurora sits inside a nine-county zone the EPA has twice classified
as failing federal ozone standards.
High altitude.
Intense UV.
I225.
E470 corridor emissions.
And wildfire smoke create year-round challenges.
Our Aurora customers consistently order higher MIRB's filters
than our national average.
The local air demands it.
How often does the live AQI map update?
Answer.
Data refreshes hourly from monitoring stations.
Aurora also operates 15 city-run stations across every ward.
Our advice.
Check it every morning like the weather.
During ozone season and wildfire events,
check twice daily.
Families who build this habit catch better days
before the house fills with pollutants.
Question.
What should I do when Aurora's AQI tops 100?
Answer.
Close windows.
Run your HVAC fan continuously
and know your filters' MIRB rating.
MIRB 8 catches dust and pollen, baseline only.
MIRB 11.
Trap smog and fine allergens are front-range minimum.
MIRB 13.
Capture smoke and ultra-fine particles.
Best for high AQI days.
The right filter should be installed before the spike,
not after.
Question.
How does outdoor AQI affect my indoor air?
Answer.
More than most people expect.
The EPA reports indoor pollutants are typically
two to five times higher than outdoor levels.
Your HVAC recirculates air constantly.
And a basic filter below MIRB 8 lets fine particles pass right through.
After working with millions of homeowners,
we can tell you the difference between a home
that smells like smoke for days
and one that doesn't almost always comes down to what's in the filter slot.
Now that you've checked, Aurora's live air quality index
make sure your home is ready for what's in the air.
Find your filter size.
Choose the MIRB rating that matches today's AQI
and will ship it factory direct to your door with free delivery.
Because the air quality map tells you what's outside
but the right filter by filter protects what's inside.
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Hi, this is Alex Cantrowitz.
I'm the host of Big Technology podcast.
A long time reporter and an on air contributor to CNBC.
And if you're like me,
you're trying to figure out how artificial intelligence
is changing the business world and our lives.
So each week on Big Technology,
I bring on key actors from companies building AI tech
and outsiders trying to influence it.
Asking where this is all going.
They come from places like Nvidia,
Microsoft, Amazon, and plenty more.
So if you want to be smart with your wallet,
your career choices,
and meetings with your colleagues and at dinner parties,
listen to Big Technology podcast wherever you get your podcasts.
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