What is the air quality in Hemel Hempstead today?

The current Air Quality Index (AQI) in Hemel Hempstead is 4 (Good). PM2.5 concentration is 1.0 µg/m³.

What is the temperature in Hemel Hempstead right now?

The current temperature in Hemel Hempstead 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 Hemel Hempstead?

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

Air Quality in Hemel Hempstead, United Kingdom

Drizzle

8.0°C · 91.5% humidity

8.0°

Feels 4.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast Calibrated

3 11pm

4 2am

4 5am

4 8am

4 11am

4 2pm

4 5pm

4 8pm

Station readings 11h ago

AQI 4

PM2.5 1.0 µg/m³ · 11h ago

CAMS model adj -21

Air Quality Index Trend

11h · 1 stn

View full history →

Hemel Hempstead'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

1.0 µg/m³

PM10▲

13.7 µg/m³

050100150200300500

What is the weather forecast for Hemel Hempstead?

Temperature & Precipitation

PM2.5 Trend

11h · 1 station

PM2.51.0 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (1 station within 25 km)

1.0

Median

1.0

Average

1.0

Low

1.0

High

PM2.5 µg/m³ · Model: 5.8 · Bias: +4.8

What is the 7-day forecast for Hemel Hempstead?

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: 4.0°C

Where are air quality stations near Hemel Hempstead?

Great Missenden

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

Harlesden HP1

28.2 km PM2.5: 5.0 µg/m³

Harlesden LP1

28.2 km PM2.5: 4.4 µg/m³

Harlesden HP2

28.4 km PM2.5: 6.3 µg/m³

Harlesden LP2

28.4 km PM2.5: 5.6 µg/m³

Camden Kerbside, United Kingdom

30.0 km PM2.5: 12.6 µg/m³

Camden Kerbside, United Kingdom

30.0 km PM2.5: 11.0 µg/m³

Camden - Coopers Lane, United Kingdom

33.0 km PM2.5: 29.7 µg/m³

What cities are near Hemel Hempstead?

4 Berkhamsted 24 St Albans 24 North Watford 30 Harpenden 23 Watford 4 Chesham 24 Bushey 8 Amersham on the Hill 27 Luton 8 Amersham

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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 2026-06-09T01:03 UTC.