Utah DEQ: DAQ: Media Forecast

Last Updated: July 24, 2026 18:57:51

County	Fri. Jul. 24, 2026	Sat. Jul. 25, 2026	Sun. Jul. 26, 2026	Advisory Message
Salt Lake	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Employers activate mandatory trip reduction programs. Individuals should TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Salt Lake	Mandatory	Mandatory	Mandatory
Davis	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Employers activate mandatory trip reduction programs. Individuals should TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Davis	Mandatory	Mandatory	Mandatory
Utah	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Employers activate mandatory trip reduction programs. Individuals should TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Utah	Mandatory	Mandatory	Mandatory
Weber	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Employers activate mandatory trip reduction programs. Individuals should TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Weber	Mandatory	Mandatory	Mandatory
Box Elder	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Employers activate mandatory trip reduction programs. Individuals should TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Box Elder	Mandatory	Mandatory	Mandatory
Cache	Moderate	Moderate	Moderate
Cache	Unrestricted	Unrestricted	Unrestricted
Tooele	Moderate	Unhealthy for Sensitive Groups	Unhealthy for Sensitive Groups	Individuals are asked to voluntarily TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Tooele	Voluntary	Mandatory	Mandatory
Wasatch	Moderate	Moderate	Moderate	Individuals are asked to voluntarily TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Wasatch	Voluntary	Voluntary	Voluntary
Washington	Moderate	Moderate	Moderate
Washington	Unrestricted	Unrestricted	Unrestricted
Iron	Moderate	Moderate	Moderate
Iron	Unrestricted	Unrestricted	Unrestricted
Carbon	Moderate	Moderate	Moderate	Individuals are asked to voluntarily TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Carbon	Voluntary	Voluntary	Voluntary
Grand	Moderate	Moderate	Moderate	Individuals are asked to voluntarily TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Grand	Voluntary	Voluntary	Voluntary
Duchesne	Moderate	Moderate	Moderate	Individuals are asked to voluntarily TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Duchesne	Voluntary	Voluntary	Voluntary
Uintah	Moderate	Moderate	Moderate	Individuals are asked to voluntarily TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.
Uintah	Voluntary	Voluntary	Voluntary

Explanation

The forecast indicates the highest pollution level of the day. During the summer, Ozone pollution levels are generally low during the morning, evening and night. During the winter, particulate matter (i.e., PM 2.5) pollution levels build up until a storm or weather system moves the air out of the valley.

The health forecast helps to determine how the highest pollution level of the day will affect people with various health conditions. Click on the “Health Forecast” legend to plan your physical activity to help minimize the effects of pollution on your health.

The action forecast notifies the public of the voluntary or mandatory actions (e.g., carpooling, wood burning) they need to adhere to for the current pollution levels. Click on the “Action Forecast” legend for a description of the action regulations.

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Action Forecast
Unrestricted Action
Voluntary Action
Mandatory Action

Health Forecast
Air Quality Index (AQI)	Ozone	PM 2.5	PM 10
Good	0 - 0.054 ppm	0 - 9.0 µg/m³	0 - 54.0 µg/m³
Moderate	0.055 - 0.070 ppm	9.1 - 35.4 µg/m³	54.1 - 154.0 µg/m³
Unhealthy for Sensitive Groups	0.071 - 0.085 ppm	35.5 - 55.4 µg/m³	154.1 - 254.0 µg/m³
Unhealthy	0.086 - 0.105 ppm	55.5 - 125.4 µg/m³	254.1 - 354.0 µg/m³
Very Unhealthy	0.106 - 0.200 ppm	125.5 - 225.4 µg/m³	354.1 - 424.0 µg/m³
Hazardous	Above 0.201 ppm	Above 225.5 µg/m³	Above 424.1 µg/m³
	Based on an 8-hour average.	Based on a 24-hour average.	Based on a 24-hour average.

Historical Air Quality Forecasts

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