Air Quality in Provo, Utah — Live

Live readings from PurpleAir sensors across Provo — with free alerts when Utah Valley's winter inversions push the air unhealthy.

Live Provo AQI from nearby PurpleAir sensors loads when this page opens in a browser, along with a live sensor map covering Provo and Orem, Springville, Spanish Fork, Pleasant Grove.

Provo's air is genuinely good for most of the year — long, dry summers and the Wasatch peaks framing the skyline are real, not marketing. The exception is winter. Provo sits at the bottom of Utah Valley, and when a cold-air inversion settles in, exhaust and wood smoke get trapped close to the ground for days at a stretch. That pattern is what earned Provo and Orem a federal 'nonattainment' label back in 2009 for missing the PM2.5 standard — a designation the EPA finally lifted in November 2025, the first time the metro area has met that bar in fifteen years.

Canairy watches the sensors around your home, your kids' school, and everywhere else you care about, and tells you in plain English when the air changes enough to matter.

Why Provo's air turns bad in winter, not summer

Provo sits on the east side of Utah Valley, a bowl pinched between the Wasatch Range and Utah Lake, with Orem, Springville, and the rest of Utah County packed onto the valley floor around it. In summer, daytime heating mixes the air and clears it out. In winter, calm high-pressure days let cold, dense air pool at the bottom of that bowl under a warmer layer above — a temperature inversion — and there's nowhere for exhaust, wood smoke, and other fine particles to go.

University of Utah atmospheric scientist Kevin Perry put it plainly to Fox 13 News: cold air 'settles in the bottom of the valley and it traps all of our local pollutants.' Those trapped particles are PM2.5 — fine enough to reach deep into the lungs — and Perry says wintertime exposure can trigger asthma flare-ups, chronic bronchitis, and in more serious cases, heart attack, stroke, and premature death.

Provo just came off the EPA's nonattainment list, after 15 years

Utah County and Salt Lake County were formally designated 'nonattainment' for the 2006 24-hour PM2.5 standard back in 2009 — official recognition that winter pollution here regularly crossed the federal health line. On November 19, 2025, the EPA redesignated both areas to attainment. EPA regional administrator Cyrus Western credited 'the hard work that Utah has done over the past decade,' while Utah Division of Air Quality director Bryce Bird pointed to 23 new state rules plus incentive programs that paid to retrofit or replace old wood stoves and diesel vehicles, alongside transit upgrades across the valley.

The milestone comes with a caveat locals should know. Dr. Brian Moench of Utah Physicians for a Healthy Environment has cautioned that the valley is 'barely in attainment,' and health officials worry that a single unusually calm, cold winter with several long inversions could push the numbers back over the line before the state's required 20-year maintenance period is up. Utah's separate ground-level ozone problem, a summertime standard, is still unresolved for the Wasatch Front.

What's actually in the air, and what Provo is doing about it

Unlike a lot of the cities Canairy covers, Provo's worst air days aren't about wildfire smoke — they're homegrown. Tailpipe exhaust and residential wood burning are the two sources state officials keep coming back to, and both concentrate in the valley precisely because the inversion has nowhere to vent them. Cleaner Tier 3 gasoline, required nationwide since 2017, has already cut per-vehicle emissions by as much as 80% compared with older fuel, which is a real part of why the numbers have improved.

The other half of the fix has been aimed at chimneys, not tailpipes: state and county incentive programs pay Utah Valley homeowners to retrofit or swap out older wood stoves for cleaner-burning models, since a single old stove running on a cold, trapped-air night can put out as much fine particulate as dozens of cars. The hay fields still visible around the edges of Provo and Springville are not a significant part of the story here — this valley's pollution problem has always been about tailpipes and chimneys, not dust or agriculture.

Provo air quality FAQ

What is the air quality in Provo right now?

This page shows the current AQI for Provo, calculated from PurpleAir sensors across the city and Utah Valley and updated continuously. The map below shows every live sensor, so you can check the reading closest to your own neighborhood, whether that's near BYU, downtown, or out toward Utah Lake.

Why does Provo's air get bad in winter?

Provo sits at the bottom of Utah Valley, boxed in by the Wasatch Range to the east. On calm winter days, cold air pools at the valley floor under a warmer layer above — a temperature inversion — and traps tailpipe exhaust and wood smoke close to the ground, sometimes for a week or more at a stretch. Summer air is usually much cleaner because daytime heat mixes it out instead of trapping it.

Did Provo really just get off the EPA's nonattainment list?

Yes. On November 19, 2025, the EPA redesignated the Provo and Salt Lake City metro areas from nonattainment to attainment for the 2006 PM2.5 24-hour standard, ending a designation that had been in place since 2009. Utah officials point to cleaner vehicle fuel, wood stove replacement incentives, and transit upgrades as the main drivers, though local doctors note the valley is only barely inside the line and a bad inversion winter could change that.

What AQI level is unhealthy?

Under the US EPA scale, AQI 0-50 is Good and 51-100 is Moderate. From 101 the air is Unhealthy for Sensitive Groups - kids, older adults, and people with asthma or heart conditions - and above 150 it's Unhealthy for everyone. Canairy translates these numbers into a plain-English verdict, like whether to close the windows or move a workout indoors.

Is Canairy free?

Yes. The Canairy app is free to download and includes live air quality for all your saved places, plain-English verdicts, and free push alerts when the air crosses your threshold. A paid plan adds extras like SMS text alerts.

Where does Canairy's Provo data come from?

Readings come from PurpleAir's network of laser particle sensors across Provo and surrounding Utah Valley towns, cross-referenced with government monitors and the Google Air Quality API. You can see every sensor behind your numbers on the live map - there's no black box.

Get Canairy free on Google Play.