Chicago — Air Quality

United States, North America. US AQI: 29 (Good). Air Quality Score: 89.3/100. Dominant pollutant: PM2.5.

Last updated: · Updated hourly

Quanteta Scores

US AQI 0 Rank 11 / 50
Air Quality Score 0/100 Rank 25 / 50
Breathability 0/100 Rank 28 / 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
Good
EU AQI
32
Dominant Pollutant
PM2.5
Measured At
2026-07-12T14:00Z

Pollutant Concentrations

Pollutant Concentration
PM2.5 Dominant 9.2 μg/m³
PM10 9.6 μg/m³
O3 79.0 μg/m³
NO2 10.0 μg/m³
SO2 2.6 μg/m³
CO 154.0 μg/m³
PM2.5: 3.5% PM10: 3.6% O3: 29.9% NO2: 3.8% SO2: 1.0% CO: 58.2% Air Quality
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