What is the air quality in Harpenden today?

The current Air Quality Index (AQI) in Harpenden is 31 (Good). PM2.5 concentration is 7.35 µg/m³.

What is the temperature in Harpenden right now?

The current temperature in Harpenden is 8.0°C (feels like 4.0°C). Humidity is 91.5% and wind speed is 29.0 km/h.

Is it safe to go outside in Harpenden?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Harpenden, United Kingdom

Drizzle

8.0°C · 91.5% humidity

8.0°

Feels 4.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated

3 10pm

31 1am

13 4am

8 7am

5 10am

4 1pm

3 4pm

4 7pm

Station readings 10h ago

AQI 4

PM2.5 1.0 µg/m³ · 10h ago

CAMS model adj -21

Air Quality Index Trend

11h · 1 stn

View full history →

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.

91.5%

Humidity

29.0 km/h

Wind WNW

1020.1 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.35 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Harpenden?

Temperature & Precipitation

PM2.5 Trend

11h · 1 station

PM2.57.35 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

What is the 7-day forecast for Harpenden?

06-09

15.8° 8.0°

0.56 mm

06-10

13.3° 11.7°

7.94 mm

06-11

25.2° 13.5°

1.75 mm

06-12

20.9° 9.0°

06-13

21.6° 9.8°

0.19 mm

06-14

20.4° 10.5°

1.06 mm

06-15

16.5° 9.4°

3.69 mm

Both models agree Avg diff: 3.9°C

Where are air quality stations near Harpenden?

Great Missenden

27.5 km PM2.5: 1.0 µg/m³ PM10: 1.0 µg/m³

Haringey Roadside, United Kingdom

31.3 km PM2.5: 3.1 µg/m³

109

Haringey Roadside, United Kingdom

31.3 km PM2.5: 38.7 µg/m³

What cities are near Harpenden?

24 St Albans 26 Luton 4 Hemel Hempstead 21 Welwyn Garden City 24 Hatfield 4 Dunstable 32 Stevenage 24 North Watford 30 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 2026-06-09T00:19 UTC.