Air Quality in Harpenden, United Kingdom

Rain
15.7°C · 89.9% humidity
15.7°
Feels 15.7°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated
6 11pm
13
33
29 2am
33
33
33 5am
33
33
33 8am
13
13
6 11am
6
6
6 2pm
6
6
6 5pm
6
6
6 8pm
6
6
Station readings
4
CAMS model adj -21
27
34
54
54
54
54
54
54
54
54
34
34
27
27
27
27
27
27
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

26h · 1 stn

Harpenden'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.

89.9%
Humidity
85.9 km/h
Wind SW
1010.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
29
6.92 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Harpenden?

Temperature & Precipitation

PM2.5 Trend

26h · 1 station
PM2.56.92 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250

What is the 7-day forecast for Harpenden?

08-03
34.6° 15.7°
3.06 mm
08-04
22.9° 14.1°
0.13 mm
08-05
22.3° 14.3°
0.25 mm
08-06
28.9° 13.6°
5.44 mm
08-07
25.8° 12.2°
1.06 mm
08-08
22.8° 12.6°
1.25 mm
08-09
19.8° 11.6°
Both models agree Avg diff: 3.2°C

Where are air quality stations near Harpenden?

–
Great Missenden
27.5 km PM2.5: 0.0 µg/m³ PM10: 1.0 µg/m³
17
Enfield - Bowes Primary School, United Kingdom
27.6 km PM2.5: 4.1 µg/m³
17
Haringey Roadside, United Kingdom
31.3 km PM2.5: 4.1 µg/m³

What cities are near Harpenden?

34 St Albans 26 Luton 4 Hemel Hempstead 30 Welwyn Garden City 35 Hatfield 4 Dunstable 30 Stevenage 32 North Watford 29 Hitchin 4 Berkhamsted
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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 2026-08-08T01:02 UTC.