Near West Side 4 Air Quality

Monitoring Station · Chicago, United States
57
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
44 6pm
44
44
44 9pm
44
44
43 12am
44
46
46 3am
46
44
46 6am
73
85
9am
12pm
3pm
CAMS model adj +19
25
25
25
25
25
25
24
25
27
27
27
25
27
54
66
PM2.515.1 µg/m³ ✓ WHO
Moderate
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Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T21:45 UTC.