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Utah Air Quality

Salt Lake City is the worst air in Utah right now at an index of 51, which is Moderate, from fine particles (PM2.5). AirNow carries 15 reporting areas in the state. No air quality alert is in force.

Reporting areas: 15
Worst index now: 51
Alerts in force: 0
Towns under smoke: 0

Fine particles on the map

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Utah. Open it for the live map, where it pans and zooms.

Open the live map with the particulate forecast

Map layer from NOAA National Air Quality Forecast Capability. Boundaries from the Iowa Environmental Mesonet.

Alerts in force

An Air Quality Alert is issued by the National Weather Service on behalf of a state or local agency when pollution is expected to reach a level that harms health. An Air Stagnation Advisory means the air will not move enough to clear what is already in it.

None are in force in Utah right now. All Utah warnings.

By city, now and the days ahead15

Every AirNow reporting area in Utah: what its monitors measured this hour, and what the state or local agency that forecasts for it expects today and tomorrow. Each area links to the nearest town’s page.

Reporting area	Now	Category now	Today	Tomorrow	Pollutant
Salt Lake City	51	Moderate	Good	Good	PM2.5
Logan	50	Good	Good	Good	PM2.5
Provo	43	Good	Good	Good	PM2.5
Canyonlands National Park	41	Good	Not forecast	Not forecast	Ozone
Whiterocks	40	Good	Not forecast	Not forecast	Ozone
Ogden	39	Good	Good	Good	PM2.5
Brigham City	34	Good	Good	Good	PM2.5
Price	33	Good	Good	Good	Ozone
Vernal	33	Good	Good	Good	Ozone
Enoch	32	Good	Good	Good	PM2.5
Hurricane	32	Good	Good	Good	Ozone
Zion National Park	32	Good	Not forecast	Not forecast	Ozone
Tooele	31	Good	Good	Good	PM2.5
Roosevelt	26	Good	Good	Good	PM2.5
Dinosaur National Monument	22	Good	Not forecast	Not forecast	Ozone

Smoke

NOAA’s analysts have not drawn wildfire smoke over any town in Utah today.

Smoke on the radar over Utah

What this means

The index runs from 0 to 500. Good is 0 to 50, Moderate to 100, Unhealthy for Sensitive Groups to 150, Unhealthy to 200, Very Unhealthy to 300, and Hazardous above that. The figure reported for a place is the highest index among the pollutants measured there, and the pollutant that produced it is named beside it.

What these numbers are. An index beside a monitor’s name is a measurement, published hourly by AirNow and preliminary until the operating agency certifies it. A category for today or tomorrow is a state or local agency forecaster’s own forecast for a reporting area. An hourly index is NOAA’s air quality model on a five-kilometer grid, not a reading from any instrument. Where a town has no monitor within reach, only the model figures appear, and the page says so.

Towns

Air quality for any town in Utah: what is measured nearby, the category forecast for today and tomorrow, and NOAA’s model hour by hour. Largest first.

Smaller places have pages too; search for one on the air quality landing page.

Sources

Observations and daily forecasts from AirNow, the US Environmental Protection Agency’s program with NOAA, the National Park Service, NASA, tribal, state and local agencies. Hourly forecasts from NOAA’s National Air Quality Forecast Capability. Smoke analysis from NOAA’s Hazard Mapping System. Alerts from the National Weather Service. Index categories and breakpoints are EPA’s, as revised in 2024.