Rockford, Illinois, USA Air Quality

Monitoring Station · Rockford, United States
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
31 7pm
50
50
50 10pm
50
50
51 1am
51
51
51 4am
51
53
80 7am
92
109
— 10am
—
—
— 1pm
—
—
— 4pm
—
—
CAMS model adj +26
24
24
24
24
24
24
25
25
25
25
25
27
54
66
83

Air Quality Forecast (24h)

PM2.57.4 µg/m³ ✓ WHO
Good
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Nearby Cities

34 Rockford 34 Loves Park 34 Machesney Park 34 Belvidere 36 Beloit 40 Freeport 39 Sycamore 33 Janesville 39 DeKalb

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T22:57 UTC.