Air Quality in Grand Island, Nebraska — Live
Live readings from PurpleAir sensors across Grand Island — with free alerts when harvest dust or wildfire smoke moves in.
AQI 21 from 1 PurpleAir sensor · Trending up · data from PurpleAir
As of , the air quality in Grand Island, Nebraska is AQI 21 — Good and rising — with PM2.5 at 3.8 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 Grand Island: weeds pollen is the strongest of the three at a very 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 Grand Island and Wood River, Doniphan, Cairo, Alda. Every dot is a real sensor, color-coded by current air quality.
Most of the year, the air in Grand Island is unremarkable in the best way — this is flat, wide-open Platte Valley farm country, not a basin or a coastline, and there's nothing nearby to trap pollution. The exceptions are tied to the land around it: dust kicked up during spring planting and fall harvest, ozone that builds on hot, still summer afternoons, and, every so often, wildfire smoke that has drifted in from a fire hundreds or even a thousand miles away.
What Canairy does for Grand Island
A clear verdict
Not just a number — a plain-English call for Grand Island: 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 Grand Island or across the country, on one screen.
Grand Island's air has its own monitor for a reason
Nebraska runs only eight ambient air monitors statewide, watching for fine particles and ozone in the places most likely to need it: Omaha (two stations), Blair, Bellevue, Lincoln, Beatrice, Scottsbluff, and Grand Island. The Grand Island station, on the west side of town at 3305 W Old Potash Hwy, is one of the few outside Nebraska's biggest metro areas, and it tracks both PM2.5 and ozone — the two pollutants regulators watch most closely in a farm-and-livestock county like Hall.
That double coverage matters here because Grand Island's pollution doesn't trace back to one obvious source the way a refinery town's does. It's a mix — dust from tillage and combines, ozone building on hot, calm afternoons, and particulate drifting in from feedlots or from wildfires hundreds of miles away. A single reading from one monitor on Old Potash Highway can miss a lot of that variation across a city of more than 53,000 spread over the flat valley floor.
Planting and harvest turn the Platte Valley air dusty
Hall County sits in some of the most heavily farmed ground in Nebraska, corn and soybeans running out from the edge of town in every direction. When fields are worked in April and May, and again once harvest gets underway in September and October, tillage and combines lift plumes of dust that can hang in the air on calm days — exactly the coarse and fine particulate the Old Potash Highway monitor exists to catch.
Livestock adds to it. Grand Island is home to a large JBS beef processing plant, and the cattle-feeding operations that supply it — Siemers Feed Yard among them, alongside dozens of smaller feeders scattered across Hall County — are a steady, lower-level source of dust and odor of their own, especially on warm, humid days with little wind to clear it. None of this usually pushes the AQI into unhealthy territory, but it's why a 'Moderate' day here often traces back to the fields and feedyards outside town rather than traffic or industry.
When the smoke isn't from anywhere near Nebraska
Grand Island doesn't sit near forestland and isn't at meaningful risk from a wildfire starting close by. But it isn't immune to smoke either. In late May 2023, an enormous run of wildfires burning in Alberta and other Canadian provinces sent smoke far enough south that Nebraska was placed under an air quality alert, alongside Colorado, Montana, the Dakotas, and Wisconsin.
That kind of episode is now a fixture of a Great Plains summer: smoke lofted high into the jet stream can travel a thousand miles or more and settle over central Nebraska as a milky haze with no fire in sight anywhere nearby. It's a different pattern from a harvest-dust day, and the two can push the AQI into the same range for entirely different reasons — which is exactly why Canairy tells you what the number is doing rather than leaving you to guess why.
Grand Island air quality FAQ
What is the air quality in Grand Island right now?
As of September 14, 2026 at 7:10 AM CDT, the air quality in Grand Island, Nebraska is AQI 21 — Good — with PM2.5 at 3.8 µg/m³, the median of 1 live PurpleAir sensor. Open the windows. Great for outdoor activity.
Why is the air in Grand Island dusty during planting and harvest?
Hall County is heavily farmed corn-and-soybean ground, and working the fields in April and May, then again during harvest in September and October, lifts fine and coarse dust that can hang in the air on calm days. The cattle-feeding operations that supply Grand Island's JBS beef plant add a steady, lower-level source of dust too. Nebraska's own air monitor here, on the west side of town, tracks both PM2.5 and ozone specifically because of this mix.
Does wildfire smoke ever reach Grand Island?
Yes, even though there's no significant wildfire risk near the city itself. In late May 2023, smoke from wildfires burning in Alberta and other Canadian provinces spread far enough south to put Nebraska under an air quality alert along with several neighboring states. Smoke like that arrives as a hazy sky with no fire anywhere close, which is exactly the kind of change Canairy is built to catch.
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 Grand Island, 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 Grand Island
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