• 1Good
• 2Moderate
• 3Mildly Unhealthy
• 4Unhealthy
• 5Very Unhealthy
• 6Hazardous

Zip code:

Chicago, IL

• O3: 9 (Good)
• PM2.5: 60 (Moderate)

Last updated: 5 CST

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

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