PM 2.5—Trend Charts

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 Relative Humidity Wind Solar Radiation

Individuals are asked to voluntarily TravelWise by consolidating trips and choose cleaner transportation options. Limit volatile organic compound (VOC) emissions.

Last Updated: May 22, 2025 9:00 PM
(Data Not Quality Assured)

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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.

PM 2.5—Trend Charts

Last Updated: May 22, 2025 9:00 PM
(Data Not Quality Assured)

Historical Data

What Can I Do?

PM 2.5—Trend Charts

Last Updated: May 22, 2025 9:00 PM(Data Not Quality Assured)

Historical Data

What Can I Do?

Last Updated: May 22, 2025 9:00 PM
(Data Not Quality Assured)