Near West Side 4 Air Quality
Monitoring Station
· Near South Side, United States
58
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
49
5pm
60
58
49
8pm
49
49
49
11pm
48
49
51
2am
51
51
49
5am
51
78
—
8am
—
—
—
11am
—
—
—
2pm
—
—
Station readings
60
58
CAMS model
adj +24
25
25
25
25
25
25
25
24
25
27
27
27
25
27
54
Air Quality Forecast (24h)
PM2.515.3 µg/m³
✓ WHO
Moderate
Nearby Monitoring Stations
57
Near South Side 1
57
Near West Side 4
57
Loop 1
58
Armour Square 1
63
Near South Side 2
58
Loop 2
62
Lower West Side 3
57
Near West Side 3
Nearby Cities
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T20:52 UTC.