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.
AQI 19 from 1 PurpleAir sensor · Trending up · data from PurpleAir
As of , the air quality in Fargo, North Dakota is AQI 19 — Good and rising — with PM2.5 at 3.5 µg/m³, from 1 live PurpleAir sensor. Canairy's verdict: Breathe easy.
For scale, that PM2.5 reading is below the World Health Organization's 24-hour guideline of 15 µg/m³. The WHO figure is a daily average and this is a live reading, so read it as a sense of magnitude rather than a formal exceedance — a brief spike and a bad day are not the same thing. More on the WHO guidelines
Pollen today in Fargo: weeds pollen is the strongest of the three at a high level, from Google's pollen forecast. Canairy shows the tree, grass and weed forecast beside the air reading on every plan, including the free one.
Free to download · Live data from PurpleAir & public monitors
Live PurpleAir sensor map for Fargo and West Fargo, Moorhead, Dilworth, Horace. Every dot is a real sensor, color-coded by current air quality.
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.
What Canairy does for Fargo
A clear verdict
Not just a number — a plain-English call for Fargo: open the windows, or keep them shut.
Smoke alerts
A push or text the moment the air crosses your threshold — and again when it clears.
A heads-up before it's bad
Trend alerts catch the air turning, so you can close up the house before the smoke settles in.
Every place you care about
Home, work, the kids' school — across Fargo or across the country, on one screen.
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?
As of September 14, 2026 at 6:36 PM CDT, the air quality in Fargo, North Dakota is AQI 19 — Good — with PM2.5 at 3.5 µg/m³, the median of 1 live PurpleAir sensor. Open the windows. Great for outdoor activity.
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 the AQI numbers mean
| AQI | Category | What it means for you |
|---|---|---|
| 0–50 | Good | Open the windows. Great for outdoor activity. |
| 51–100 | Moderate | Sensitive groups may want to take it slower outside. |
| 101–150 | Unhealthy for Sensitive Groups | Kids, elderly, and respiratory conditions stay closer to home. |
| 151–200 | Unhealthy | Skip outdoor exercise. Close windows. |
| 201–300 | Very Unhealthy | Limit time outside. N95 if you must go. |
| 301+ | Hazardous | Health emergency. Stay inside, run filtration if you have it. |
Canairy lets you tighten these bands if you’re more sensitive than the EPA default, so an alert can fire before the official category changes. How to read the Air Quality Index
Where these readings come from
The AQI at the top of this page is the median of the 1 curated PurpleAir sensor Canairy tracks in and around Fargo, with outliers set aside so that one sensor brought indoors — or parked beside a barbecue — cannot set the number for a whole city. Every sensor behind it is listed above with its distance and bearing from the city center. There is no black box here.
In the app, a place you save resolves the same way first. When no neighborhood sensor is reporting it falls back to the nearest EPA AirNow monitor, and anything modeled rather than measured is labelled a regional estimate rather than passed off as a sensor reading. How low-cost sensors compare to regulatory monitors
About Canairy
Canairy is free to download. The free plan covers one saved place with live readings, a plain-English verdict, and push alerts when the air crosses a threshold you choose. Paid plans add more places, faster refreshes, and SMS alerts. It is built by two parents in Sonoma County, California, who got tired of guessing whether it was safe to send the kids outside. Why we built it
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Air quality near Fargo
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