Air Quality in Belvidere, United States
Cloudy
25.4°C · 71.5% humidity
25.4°
Feels 25.4°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Belvidere's air quality — share it
AQI Forecast
24
5pm
24
24
38
8pm
34
32
30
11pm
28
29
56
2am
67
84
84
5am
83
83
54
8am
66
146
146
11am
146
146
146
2pm
146
146
Air Quality Index Trend
25h · 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.
71.5%
Humidity
30.0 km/h
Wind NE
1014.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.1 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Belvidere?
Temperature & Precipitation
PM2.5 Trend
25h · 2 stationsPM2.59.1 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
9.1
Median
9.1
Average
9.1
Low
9.1
High
PM2.5 µg/m³ · Model: 6.15 · Bias: -3.0
What is the 7-day forecast for Belvidere?
07-22
25.4° 17.5°
0.19 mm
07-23
21.4° 16.4°
12.56 mm
07-24
27.2° 13.6°
07-25
22.3° 15.9°
0.06 mm
07-26
25.1° 19.8°
2.5 mm
07-27
24.8° 18.9°
3.19 mm
07-28
30.5° 21.7°
1.75 mm
Both models agree
Avg diff: 4.3°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 2026-07-22T01:08 UTC.