Air Quality in Belvidere, United States
Windy
28.4°C · 50.2% humidity
28.4°
Feels 30.8°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Belvidere's air quality — share it
AQI Forecast
25
12pm
25
25
22
3pm
25
25
25
6pm
25
24
25
9pm
25
25
25
12am
25
25
25
3am
25
25
25
6am
25
27
27
9am
25
25
Air Quality Index Trend
40h · 2 stnBelvidere's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
50.2%
Humidity
74.9 km/h
Wind WNW
1018.5 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.3 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Belvidere?
Temperature & Precipitation
PM2.5 Trend
40h · 2 stationsPM2.55.3 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX17.4
Extreme
Station readings (1 station within 25 km)
5.3
Median
5.3
Average
5.3
Low
5.3
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +0.9
What is the 7-day forecast for Belvidere?
05-29
28.4° 5.9°
05-30
23.3° 10.3°
0.81 mm
05-31
29.2° 13.1°
0.19 mm
06-01
29.5° 14.8°
0.31 mm
06-02
21.1° 15.4°
10.63 mm
06-03
29.1° 21.0°
06-04
24.1° 12.8°
Both models agree
Avg diff: 6.3°C
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T20:11 UTC.