What is the air quality in Chicago today?

The current Air Quality Index (AQI) in Chicago is 58 (Moderate). PM2.5 concentration is 15.31 µg/m³.

What is the temperature in Chicago right now?

The current temperature in Chicago is 8.7°C (feels like 2.0°C). Humidity is 43.8% and wind speed is 95.9 km/h.

Air Quality in Chicago, United States

Drizzle

8.7°C · 43.8% humidity

8.7°

Feels 2.0°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

280 stations

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

5h · 1 stn

View full history →

Chicago's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Chicago is 1.0× the WHO 24-hour guideline of 15 µg/m³.

43.8%

Humidity

95.9 km/h

Wind NNE

1027.5 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

15.31 µg/m³

PM10

54.9 µg/m³

050100150200300500

What is the weather forecast for Chicago?

Temperature & Precipitation

PM2.5 Trend

5h · 1 station

PM2.515.31 µg/m³ ✓ WHO

Moderate

PM1054.9 µg/m³

Moderate

UV INDEX0.0

Low

Station readings (280 stations within 25 km)

15.31

Median

16.7

Average

1.0

Low

26.22

High

PM2.5 µg/m³ · Model: 19.2 · Bias: +3.9

What is the 7-day forecast for Chicago?

10-20

11.9° 7.6°

0.13 mm

10-21

22.7° 13.0°

0.31 mm

10-22

16.2° 9.2°

0.31 mm

10-23

12.3° 9.7°

2.56 mm

10-24

24.4° 11.0°

10-25

15.2° 4.7°

0.25 mm

10-26

16.3° 3.5°

5.63 mm

Both models agree Avg diff: 4.7°C

Where are air quality stations near Chicago?

Lower West Side 3

0.3 km PM2.5: 13.3 µg/m³

Armour Square 1

1.2 km PM2.5: 15.4 µg/m³

Bridgeport 1

1.4 km PM2.5: 18.1 µg/m³

Lower West Side 2

1.6 km PM2.5: 17.6 µg/m³

Near West Side 4

1.7 km PM2.5: 15.1 µg/m³

Lower West Side 4

1.7 km PM2.5: 18.6 µg/m³

Armour Square 2

1.8 km PM2.5: 17.9 µg/m³

Near West Side 4

2.3 km PM2.5: 12.8 µg/m³

Near West Side 5

2.3 km PM2.5: 16.9 µg/m³

Bridgeport 2

2.5 km PM2.5: 19.0 µg/m³

What cities are near Chicago?

65 Bridgeport 64 Lower West Side 54 Near South Side 65 McKinley Park 63 Douglas 59 Chicago Loop 64 New City 58 Grand Boulevard 67 South Lawndale 63 West Town

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T20:05 UTC.