Air Quality in Herstal, Belgium

Clear
14.2°C · 46.7% humidity
14.2°
Feels 14.2°
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
11 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
32 9pm
32
37
52 12am
44
39
42 3am
39
37
36 6am
35
54
33 9am
33
33
32 12pm
32
32
32 3pm
32
32
32 6pm
32
32
Station readings
37
33
CAMS model adj -2
34
34
27
27
27
27
34
34
34
34
34
54
34
34
34
34
34
34
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

8h · 1 stn

Herstal's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

46.7%
Humidity
27.2 km/h
Wind S
1014.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
52
12.7 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Herstal?

Temperature & Precipitation

PM2.5 Trend

8h · 1 station
PM2.512.7 µg/m³ ✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (11 stations within 25 km)
12.7
Median
6.8
Average
1.55
Low
13.1
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -6.4

What is the 7-day forecast for Herstal?

07-21
27.7° 13.8°
0.19 mm
07-22
26.9° 14.2°
07-23
20.3° 17.7°
0.19 mm
07-24
23.2° 15.1°
2.38 mm
07-25
30.5° 9.5°
0.19 mm
07-26
32.2° 12.5°
0.06 mm
07-27
27.7° 18.0°
Both models agree Avg diff: 3.4°C

Where are air quality stations near Herstal?

4
Herstal, Belgium
0.7 km PM2.5: 1.0 µg/m³
27
liege (av m destenay)
4.7 km PM2.5: 6.5 µg/m³ PM10: 14.0 µg/m³
59
Liege
4.7 km PM2.5: 15.9 µg/m³
73
Liege
4.7 km PM2.5: 22.6 µg/m³
50
Liege
4.7 km PM2.5: 12.0 µg/m³
55
Liege
4.7 km PM2.5: 14.0 µg/m³
46
Liege
4.7 km PM2.5: 11.0 µg/m³
36
Liege
4.7 km PM2.5: 8.6 µg/m³
25
Angleur, Belgium
5.9 km PM2.5: 6.0 µg/m³
9
Liege (issep), Belgium
6.8 km PM2.5: 2.2 µg/m³

What cities are near Herstal?

39 Grivegnée 36 Liège 36 Oupeye 39 Fléron 26 Ans 26 Saint-Nicolas 35 Chaudfontaine 27 Visé 36 Soumagne 35 Herve
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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 2026-07-21T22:58 UTC.