What is the air quality like in Chicago?
Chicago has an average AQI of 58, which falls in the "Moderate" category. About 50% of days have Good air quality, 38% are Moderate, and 10% are Unhealthy for Sensitive Groups. The primary pollutant is PM2.5.
What is the main pollutant in Chicago?
The primary pollutant in Chicago is PM2.5. The city's average PM2.5 level is 10 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 44 ppb. Major pollution sources include vehicles, industry, power plants.
Is Chicago affected by wildfire smoke?
Chicago has a low wildfire risk rating. Wildfire smoke rarely impacts air quality here.
How many good air quality days does Chicago have?
Approximately 50% of days in Chicago have Good air quality (AQI 0-50). Residents experience Good air quality about half the time, with other days being Moderate or worse.
When is pollen season in Chicago's state (IL)?
Pollen seasons in IL include: Weed Pollen (August–October, Very High severity); Mold Spores (June–October, Moderate severity); Tree Pollen (March–May, High severity); Grass Pollen (May–July, Moderate severity). Allergy sufferers should monitor pollen counts during these periods and consider staying indoors on high-pollen days, especially during morning hours when counts peak.