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Box Elder Cache Carbon Davis Duchesne Grand Iron Salt Lake Tooele Uintah Utah Wasatch Washington Weber
PM 2.5 PM 10 Ozone Nitrogen Oxides (NO) Carbon Monoxide (CO) Sulfur Dioxide (SO2) Temperature Wind Solar Radiation

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 particulates. If smoke becomes thick, persons with existing heart or respiratory ailments should reduce physical exertion and outdoor activity. Wild Fire Outlooks

Last Updated: July 28, 2026 1:00 PM
(Data Not Quality Assured)

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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.

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Read the Solid Fuel Burning Devices Rule R307-302

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