Air Quality in Fargo, North Dakota — Live

Live readings from PurpleAir sensors across Fargo and the Red River Valley — with free alerts when Canadian wildfire smoke or harvest-season dust moves in.

Live Fargo AQI from nearby PurpleAir sensors loads when this page opens in a browser, along with a live sensor map covering Fargo and West Fargo, Moorhead, Dilworth, Horace.

Fargo sits on the old bed of glacial Lake Agassiz — the Red River Valley is about as flat as land gets in this country, with no mountains, canyons, or basin walls to trap pollution the way Western cities know. Most days, that geography and a near-constant prairie wind keep the air genuinely good, with ozone typically reading well under 40 parts per billion. What actually moves the needle here is smoke that isn't local at all: wildfires burning hundreds of miles north in Manitoba, Saskatchewan, and Ontario, whose smoke can drift south and settle over the Red River Valley for days at a stretch, plus dust and particulate matter from the valley's own sugar beet processing plants during fall harvest.

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.

Fargo's flat, windy prairie usually keeps the air clean

The Red River Valley is farmland precisely because it's the flattened bed of glacial Lake Agassiz, drained roughly 9,300 years ago into some of the richest soil in the world — and about as little topographic relief as a US city gets. There's no valley wall or basin to hold a temperature inversion over Fargo the way hillier cities experience; without hills to block it, wind moves through constantly, and local exhaust or dust normally clears out within hours instead of settling in.

That's why day-to-day monitoring around Fargo spends most of the year in the Good range for both ozone and fine particle pollution. It also means the exceptions are almost always imported — something burning or processing far outside the city, carried in on the wind rather than generated locally on a still day.

When Canadian wildfire smoke reaches the Red River Valley

Fargo has no wildfire season of its own — the valley is row crops, not forest. The risk instead comes from Canada. On June 14, 2023, North Dakota's Department of Environmental Quality issued a statewide health advisory as smoke from Canadian wildfires pushed into the north-central and eastern part of the state, warning that conditions would be variable and unpredictable as winds shifted overnight.

It happened again that summer, worse. By August 29-30, 2023, smoke had driven parts of North Dakota's AQI into the unhealthy, very unhealthy, and hazardous categories, and the Minnesota Pollution Control Agency issued its own alert covering Moorhead and other western Minnesota cities. Both times the guidance was the same: close the windows, set the air conditioner to recirculate, and take it easier outside if you have asthma, COPD, or another respiratory condition.

The sugar beet plant across the river in Moorhead

The Red River Valley is one of the country's largest sugar beet growing regions — the Red River Valley Sugarbeet Growers Association represents more than 2,700 growers farming roughly 400,000 acres across five processing plants. One of those plants, American Crystal Sugar's facility in Moorhead, sits directly across the river from Fargo.

In October 2024, the Minnesota Pollution Control Agency fined American Crystal Sugar $12,315 after stack tests that fall found two boilers releasing particulate matter 62 to 226 percent over their permitted limit, on top of a vertical lime kiln that had exceeded emissions limits 121 times across 414 tests earlier in 2022. It's a reminder that during harvest and processing season, industrial particulate matter — not just wildfire smoke — can be part of what's in the Fargo-Moorhead air.

Fargo air quality FAQ

What is the air quality in Fargo right now?

This page shows the current AQI for Fargo, calculated from PurpleAir sensors across the city and the surrounding Red River Valley and updated continuously. The map below shows every live sensor, so you can check the reading closest to your own neighborhood.

Why does Fargo's air get smoky some summers?

Fargo doesn't have a local wildfire season — the Red River Valley is farmland, not forest. But wildfire smoke from Manitoba, Saskatchewan, and Ontario can drift hundreds of miles south. That happened twice in 2023: North Dakota issued a health advisory on June 14 as smoke moved into the eastern part of the state, and by August 29-30 the AQI had reached unhealthy, very unhealthy, and hazardous levels in parts of North Dakota, with Minnesota issuing its own alert covering Moorhead.

Does the sugar beet plant in Moorhead affect Fargo's air quality?

It can. American Crystal Sugar's processing facility in Moorhead, just across the river from Fargo, was fined $12,315 by the Minnesota Pollution Control Agency in October 2024 after boiler stack tests found particulate matter 62 to 226 percent over its permitted limit. It's one of five plants serving the Red River Valley's roughly 400,000 acres of sugar beets, and harvest-season processing is a real, local source of particulate matter alongside anything drifting in from wildfire smoke.

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 Fargo data come from?

Readings come from PurpleAir's network of laser particle sensors across Fargo 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.