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Belvidere (Illinois) (US)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Clear sky
24°C
Clear sky
Humidity
49.1%
Wind
5 m/s
Pressure
1008.9 hPa
Direction
215°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
16° / 25°
Precip.
0.4mm
Max wind
9.4 m/s

Hourly Forecast

30.03
Now
Weather
24°
5
30.03
20:00
Weather
24°
6
30.03
21:00
Weather
25°
6
30.03
22:00
Weather
25°
7
30.03
23:00
Weather
24°
6
31.03
00:00
Weather
22°
6
31.03
01:00
Weather
21°
7
31.03
02:00
Weather
20°
6
31.03
03:00
Weather
20°
6
31.03
04:00
Weather
21°
8
31.03
05:00
Weather
22°
8
31.03
06:00
Weather
21°
8
31.03
07:00
Weather
21°
9
31.03
08:00
Weather
19°
0.2
9
31.03
09:00
Weather
17°
7
31.03
10:00
Weather
17°
0.2
6
31.03
11:00
Weather
16°
5
31.03
12:00
Weather
16°
6
31.03
13:00
Weather
16°
6
31.03
14:00
Weather
18°
6
31.03
15:00
Weather
19°
7
31.03
16:00
Weather
20°
8
31.03
17:00
Weather
22°
8
31.03
18:00
Weather
22°
7

Temperature

25°C
16°C
19:00
24°C
20:00
24°C
21:00
25°C
22:00
25°C
23:00
24°C
00:00
22°C
01:00
21°C
02:00
20°C
03:00
20°C
04:00
21°C
05:00
22°C
06:00
21°C
07:00
21°C
08:00
19°C
09:00
17°C
10:00
17°C
11:00
16°C
12:00
16°C
13:00
16°C
14:00
18°C
15:00
19°C
16:00
20°C
17:00
22°C
18:00
22°C
19:00 06:00 18:00

Precipitation

0.2mm
0mm
08:00
0.2mm
10:00
0.2mm
19:00 06:00 18:00

Wind

9.4m/s
0m/s
19:00
5.4 m/s
20:00
5.6 m/s
21:00
6 m/s
22:00
6.6 m/s
23:00
6.1 m/s
00:00
6.4 m/s
01:00
6.6 m/s
02:00
6.4 m/s
03:00
5.7 m/s
04:00
7.5 m/s
05:00
7.9 m/s
06:00
8.2 m/s
07:00
8.8 m/s
08:00
9.4 m/s
09:00
7 m/s
10:00
5.6 m/s
11:00
5.1 m/s
12:00
5.9 m/s
13:00
6.1 m/s
14:00
6 m/s
15:00
6.7 m/s
16:00
8.1 m/s
17:00
7.9 m/s
18:00
7.3 m/s
19:00 06:00 18:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
20.2 km
149
49.7%

Measurement time: 2026-03-30 21:00

Calculated from PM2.5/PM10

O3
62.3 km
108.51 µg/m3
67.8%

Measurement time: 2026-03-30 21:39

source: OpenWeatherMap

PM2.5
20.2 km
55 µg/m3
65.5%

Measurement time: 2026-03-30 21:00

source: Aqicn

PM10
62.3 km
11.7 µg/m3
8.4%

Measurement time: 2026-03-30 21:39

source: OpenWeatherMap

CO
62.3 km
0.13782 mg/m3
1%

Measurement time: 2026-03-30 21:39

source: OpenWeatherMap

SO2
62.3 km
1.39 µg/m3
0.4%

Measurement time: 2026-03-30 21:39

source: OpenWeatherMap

NO2
62.3 km
0.64 µg/m3
0.3%

Measurement time: 2026-03-30 21:39

source: OpenWeatherMap

Info


Region: Illinois
Latitude: 42.26391
Longitude: -88.84427


Solar Energy

Moderate
417 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Belvidere

About Air Quality in Belvidere

Air quality in Belvidere is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Belvidere

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Belvidere?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Belvidere

If you're planning outdoor activities in Belvidere, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.