Salt Lake County—Current Conditions
March 22, 2018 11:00 PM (updated hourly)
PM 2.54.3 µg/m3
WindS 10.9 mph
As with temperature, air pollution varies throughout the day.
Wind advisory for today. Due to the passage of a weather system, the Utah Division of Air Quality indicates the possibility of wind blown dust in the area. Try to avoid outdoor activity if blowing dust is observed. People with existing heart or respiratory ailments should take proper precautions.
The data displayed on this page represents the current air pollution levels and meteorological values, and is not quality assured. For quality assured data please visit https://www.epa.gov/outdoor-air-quality-data.
Particulate matter (PM), also known as particle pollution, is a complex mixture of extremely small dust and soot particles. For more information visit Air Pollutants: Particulate Matter.
Ozone (O3) is formed when hydrocarbons and nitrogen oxides chemically react in the presence of sunlight and heat. For more information visit Air Pollutants: Ozone.
|Air Quality Index (AQI)||PM 2.5||Ozone|
|Good||0 - 12.0 µg/m3||0 - 0.054 ppm|
|Moderate||12.1 - 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 - 150.4 µg/m3||0.086 - 0.105 ppm|
|Very Unhealthy||150.5 - 250.4 µg/m3||0.106 - 0.200 ppm|
|Hazardous||Above 250.5 µg/m3||Above 0.201 ppm|
|Based on a 24-hour average.||Based on an 8-hour average.|