Loop 1 Air Quality

Monitoring Station · Chicago Loop, United States
60
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
60 5pm
60
51
51 8pm
51
51
51 11pm
50
51
53 2am
53
53
51 5am
53
8am
11am
2pm
Station readings
60
60
CAMS model adj +26
25
25
25
25
25
25
25
24
25
27
27
27
25
27
PM2.516.2 µg/m³ ×1.1 WHO
Moderate
View city history →

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T20:17 UTC.