AQ Index for Union County, Illinois

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Air Quality Index for Union County, Illinois

The area with the highest AQ Index (as of 4:00 CST) in is in the St. Louis (Metro-east) area. Ozone (OZONE) is measuring at 31 (Good). This means air quality is satisfactory, and air pollution poses little or no risk.

Over the next few days, the highest primary air pollutant will be Particle Pollution (PM2.5) in the St. Louis (Metro-east) area. It is forecasted to be 0 (Good), meaning air quality is satisfactory, and air pollution poses little or no risk.

Below is a clickable map of Union County, Illinois. The markers on the map identify large, populated cities. If you hover over a marker, it will display the city name and the current AQ index. The color of the city markers also references the current AQ risk level.

Range	0 - 50	51 - 100	101 - 150	151 - 200	201 - 300	301 - 500
Color
Category	Good	Moderate	Unhealthy for Sensitive Groups	Unhealthy	Very Unhealthy	Hazardous

AQ Index Forecast by City in Union County

Below is a list of cities in Union County where we track and forecast the AQ index. Click on a city name to get the current AQ index as well as any available forcasts.

Anna	Jonesboro	Cobden	Dongola	Alto Pass
Mill Creek