Chicago — Air Quality

United States, North America. US AQI: 65 (Moderate). Air Quality Score: 78.6/100. Dominant pollutant: PM2.5.

Last updated: · Updated hourly

Quanteta Scores

US AQI 0 Rank 34 / 50
Air Quality Score 0/100 Rank 33 / 50
Breathability 0/100 Rank 33 / 50

City Info

City ID
aq-chicago
Country
United States (US)
Region
North America
Population
2,700,000
Coordinates
41.8781, -87.6298
Timezone
America/Chicago
AQI Level
Moderate
EU AQI
38
Dominant Pollutant
PM2.5
Measured At
2026-07-08T14:00Z

Pollutant Concentrations

Pollutant Concentration
PM2.5 Dominant 21.2 μg/m³
PM10 21.5 μg/m³
O3 66.0 μg/m³
NO2 27.9 μg/m³
SO2 4.7 μg/m³
CO 198.0 μg/m³
PM2.5: 6.2% PM10: 6.3% O3: 19.5% NO2: 8.2% SO2: 1.4% CO: 58.4% Air Quality
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