What is the air quality in Harpenden today?

The current Air Quality Index (AQI) in Harpenden is 22 (Good). PM2.5 concentration is 5.34 µg/m³.

What is the temperature in Harpenden right now?

The current temperature in Harpenden is 4.6°C (feels like -0.8°C). Humidity is 96.7% and wind speed is 33.4 km/h.

Is it safe to go outside in Harpenden?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0 (Very High).

Air Quality in Harpenden, United Kingdom

Overcast

4.6°C · 96.7% humidity

4.6°

Feels -0.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated

8 8pm

24 11pm

11 2am

11 5am

24 8am

24 11am

24 2pm

36 5pm

Station readings

CAMS model adj -1

PM2.5 Trend (24h)

28h · 16 stations

96.7%

Humidity

33.4 km/h

Wind NW

1016.0 hPa

Pressure

7.9

UV Very High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Harpenden?

Temperature & Precipitation

PM2.55.34 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX7.9

Very High

What is the 7-day forecast for Harpenden?

04-09

10.7° 3.6°

8.69 mm

04-10

12.5° 4.1°

0.06 mm

04-11

8.9° 2.3°

5.31 mm

04-12

10.3° 3.1°

1.0 mm

04-13

12.1° 3.7°

1.31 mm

04-14

12.6° 3.3°

04-15

13.9° 5.5°

0.19 mm

Both models agree Avg diff: 2.0°C

Where are air quality stations near Harpenden?

Great Missenden

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

Enfield - Bowes Primary School, United Kingdom

27.6 km

Enfield - Bowes Primary School, United Kingdom

27.6 km

What cities are near Harpenden?

30 St Albans 18 Luton 4 Hemel Hempstead 2 Welwyn Garden City 3 Hatfield 4 Dunstable 24 Stevenage 21 North Watford 22 Hitchin 4 Berkhamsted

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T23:01 UTC.