Utah DEQ: Air Quality Trend Charts

Duchesne County ‐ 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 Wind Solar Radiation

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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.