Air Quality in Harpenden, United Kingdom
Clear
15.5°C · 48.1% humidity
15.5°
Feels 15.5°
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Harpenden's air quality — share it
AQI Forecast
Calibrated
3
1pm
3
3
24
4pm
18
14
11
7pm
16
34
33
10pm
12
11
11
1am
31
31
30
4am
30
30
30
7am
30
30
30
10am
10
10
Station readings
4
3
CAMS model
adj -24
27
27
27
27
27
27
27
34
54
54
34
34
34
54
54
54
54
54
54
54
54
54
34
34
Air Quality Index Trend
21h · 1 stnHarpenden'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.
48.1%
Humidity
22.2 km/h
Wind NNW
1029.2 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.67 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Harpenden?
Temperature & Precipitation
PM2.5 Trend
21h · 1 stationPM2.55.67 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
What is the 7-day forecast for Harpenden?
09-05
15.5° 10.3°
0.25 mm
09-06
17.8° 10.0°
0.13 mm
09-07
14.2° 12.5°
1.5 mm
09-08
21.8° 8.1°
0.44 mm
09-09
18.7° 8.5°
0.5 mm
09-10
21.7° 13.2°
09-11
15.8° 11.3°
0.5 mm
Both models agree
Avg diff: 3.4°C
Where are air quality stations near Harpenden?
3
Great Missenden
15
Enfield - Bowes Primary School, United Kingdom
16
Enfield - Bowes Primary School, United Kingdom
21
Haringey Roadside, United Kingdom
25
Haringey Roadside, United Kingdom
2
Haringey Roadside, United Kingdom
What cities are near Harpenden?
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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 2026-09-05T15:53 UTC.