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Last Updated: July 14, 2026 8:35 AM
Tuesday
Health
Unhealthy for Sensitive Groups
Mandatory Action
Wednesday
Health
Unhealthy for Sensitive Groups
Mandatory Action
Thursday
Health
Unhealthy for Sensitive Groups
Mandatory Action
Employers activate mandatory trip reduction programs. Individuals should TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions. Smoke from wild fires could cause high concentrations of particulate matter. If smoke becomes thick, persons with existing heart or respiratory ailments should reduce physical exertion and outdoor activity. Wild Fire Outlooks
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)
PM 2.5
Ozone
Good
0 - 9.0 µg/m3
0 - 0.054 ppm
Moderate
9.1 - 35.4 µg/m3
0.055 - 0.070 ppm
Unhealthy for Sensitive Groups
35.5 - 55.4 µg/m3
0.071 - 0.085 ppm
Unhealthy
55.5 - 125.4 µg/m3
0.086 - 0.105 ppm
Very Unhealthy
125.5 - 225.4 µg/m3
0.106 - 0.200 ppm
Hazardous
Above 225.5 µg/m3
Above 0.201 ppm
Based on a 24-hour average.
Based on an 8-hour average.
Historical Air Quality Forecasts
Ozone (No Drive)
| Action Forecasts by Date
Particulate (Action Days)
| Action Forecast by Date
Current Air Pollution
What Can I Do?
Choose Clean Air
What I Can Do
Tools
Inversions
Read the Solid Fuel Burning Devices Rule R307-302
Phone App
Look for the Utah Air phone app on Android and iPhone stores.
Utah Department of Health & Human Services
Utah Air and Your Health
Asthma
Recess Guidance Guidelines
Air Quality Index
Media
Forecasts at a Glance
Current Conditions at a Glance
