Ozone in Chicago, IL

Real-time Ground-level Ozone monitoring and health recommendations

Current Ozone Levels

Overall AQI

29
ppb
AQI 40

About Ground-level Ozone

A harmful gas created by chemical reactions between pollutants in sunlight.

Measured in ppb

Health Impact

Good

Air quality is considered satisfactory, and air pollution poses little or no risk.

Sources of Ozone

• Chemical reactions between NOx and VOCs in sunlight

• Vehicle emissions

• Industrial facilities

• Gasoline vapors and solvents

Other Pollutants

PM2.5
Fine Particulate Matter
PM2.5
Fine Particulate Matter
PM10
Coarse Particulate Matter
NO2
Nitrogen Dioxide
NO2
Nitrogen Dioxide

Full Air Quality Report

View all pollutants and comprehensive air quality data for Chicago.

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Compare Cities

See how Ozone levels in Chicago compare to other cities

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