Near West Side 4

Monitoring Station · Chicago, United States
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
70 3pm
70
57
57 6pm
57
57
57 9pm
57
57
70 12am
70
70
70 3am
95
95
— 6am
—
—
— 9am
—
—
— 12pm
—
—
CAMS model adj +20
50
50
37
37
37
37
37
37
37
50
50
50
50
75
75

Air Quality Trend (24h)

PM2.512.7 µg/m³ ✓ WHO
Moderate

Nearby Monitoring Stations

30
Near West Side 4
1.3 km PM2.5: 7.3 µg/m³
30
Lower West Side 3
1.4 km PM2.5: 7.2 µg/m³
27
Near West Side 5
1.5 km PM2.5: 6.4 µg/m³
26
Near West Side 3
1.8 km PM2.5: 6.2 µg/m³
29
Armour Square 1
1.9 km PM2.5: 7.0 µg/m³
26
Near West Side 2
2.0 km PM2.5: 6.2 µg/m³
30
Lower West Side 2
2.1 km PM2.5: 7.3 µg/m³
27
Near South Side 1
2.6 km PM2.5: 6.5 µg/m³

Nearby Cities

31 Chicago 31 Lower West Side 31 Near South Side 31 Chicago Loop 31 Bridgeport 30 West Town 30 Near North Side 31 McKinley Park 31 Douglas

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-09T18:38 UTC.