Air Quality in Iowa City, Iowa — Live
Live readings from PurpleAir sensors across Iowa City — with free alerts when wildfire smoke drifts in from hundreds of miles away.
Live Iowa City AQI from nearby PurpleAir sensors loads when this page opens in a browser, along with a live sensor map covering Iowa City and Coralville, North Liberty, Tiffin, Solon.
Iowa City's air is genuinely clean most of the year. The city has no heavy industry to speak of — the University of Iowa and its hospitals are the biggest thing here — and it sits on flat, open farm country with nothing to trap local exhaust the way a mountain valley does. The exception is summer, when smoke from wildfires burning hundreds of miles away in Canada can ride the jet stream south and settle right down to the ground over eastern Iowa.
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.
Iowa City has already lived through this twice
On Monday, June 26, 2023, Iowa City's air quality index read a clean 30. By lunchtime Tuesday it had jumped to 162 — unhealthy — and by 2:30 that afternoon it hit 223, very unhealthy. It was still at 224 the next morning. The National Weather Service said the smoke, blown down from wildfires in Canada, was worse than forecast because it was reaching all the way to the ground instead of staying aloft. Cedar Rapids, 25 miles north, peaked at 264 that day, the highest reading anywhere in the state.
It happened again on July 20, 2026: the Iowa DNR and National Weather Service issued a joint air quality alert as Canadian wildfire smoke pushed Iowa City's AQI to 156, with officials advising sensitive groups to reschedule outdoor plans or wear an N95 mask if they had to be outside. Three years apart, same cause, same pattern — this is now a recognizable part of an Iowa City summer, not a freak occurrence.
Why smoke from 500 miles away still reaches the ground here
Iowa City sits along the Iowa River at around 656 feet elevation, in a landscape of rolling farmland with no mountains or valley walls anywhere nearby. That geography means the city rarely traps its own pollution the way a basin city does — there simply isn't much local exhaust to trap. But flat, open terrain does nothing to stop a plume of wildfire smoke moving overhead from another country entirely.
When a large enough fire sends smoke high into the jet stream, it can travel for days and hundreds of miles before a shift in the upper-level winds pushes it back down to breathing height. That's what happened over eastern Iowa in both June 2023 and July 2026 — clear skies one afternoon, a hazy, particle-heavy sky the next morning, with the source burning a thousand miles to the north.
What actually changes on an alert day
The last time this happened, Iowa City Parks and Recreation cancelled outdoor programming for two straight days while the advisory was in effect, and the Iowa DNR moved its guidance from 'reduce outdoor activity' to 'move activities indoors' as conditions worsened. That's a useful signal: when the city's own parks department starts cancelling camps and practices, the air is past the point of just looking hazy.
Canairy exists so you don't have to wait for that kind of announcement to know your own number. Set a threshold once, and you'll get a plain-English alert — close the windows, skip the run, bring the kids inside — the moment the sensors near your saved places cross it, whether that's from a Canadian fire or anything else.
Iowa City air quality FAQ
What is the air quality in Iowa City right now?
This page shows the current AQI for Iowa City, calculated from PurpleAir sensors across the city and updated continuously. The map below shows every live sensor, so you can check the reading closest to your own neighborhood.
Why does Iowa City get hazy or smoky in summer?
The cause both times it has happened in recent years has been wildfire smoke from Canada, not anything burning locally. On June 27-28, 2023, Iowa City's AQI climbed from a clean 30 to 224 as smoke settled to ground level, with Cedar Rapids peaking at 264 the same day. On July 20, 2026, the Iowa DNR and National Weather Service issued another alert as Canadian smoke pushed the AQI to 156. Iowa City's flat, open geography does nothing to stop a smoke plume moving in from hundreds of miles away.
What was Iowa City's worst air-quality day on record recently?
June 28, 2023, when the AQI was still reading 224 - very unhealthy - at 8 a.m. after Canadian wildfire smoke settled over the region the day before. The Iowa DNR expanded its advice that week from reducing outdoor activity to moving activities indoors entirely, and Iowa City Parks and Recreation cancelled outdoor programming for two days.
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.
Where does Canairy's Iowa City data come from?
Readings come from PurpleAir's network of laser particle sensors across Iowa City and surrounding 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.
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.
Get Canairy free on Google Play.