Air Quality in Hemel Hempstead, United Kingdom

Clear
15.5°C · 48.1% humidity
15.5°
Feels 15.5°
4
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
3 3pm
3
3
4 6pm
3
30
30 9pm
42
42
42 12am
42
30
30 3am
30
30
30 6am
30
30
30 9am
30
10
10 12pm
10
3
Station readings
3
4
CAMS model adj -24
27
27
27
27
27
54
54
66
66
66
66
54
54
54
54
54
54
54
54
54
34
34
34
27
AD 728×90

Air Quality Index Trend

20h · 1 stn

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.

48.1%
Humidity
22.2 km/h
Wind NNW
1029.2 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
4
1.0 µg/m³
PM10▲
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Hemel Hempstead?

Temperature & Precipitation

PM2.5 Trend

20h · 1 station
PM2.51.0 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (1 station within 25 km)
1.0
Median
1.0
Average
1.0
Low
1.0
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +5.2

What is the 7-day forecast for Hemel Hempstead?

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 Hemel Hempstead?

4
Great Missenden
18.9 km PM2.5: 1.0 µg/m³ PM10: 1.0 µg/m³
25
Brent - Ikea, United Kingdom
26.0 km PM2.5: 6.0 µg/m³
46
Brent - Ikea, United Kingdom
26.0 km PM2.5: 11.0 µg/m³
15
Enfield - Bowes Primary School, United Kingdom
27.2 km PM2.5: 3.6 µg/m³
17
Enfield - Bowes Primary School, United Kingdom
27.2 km PM2.5: 4.1 µg/m³
38
Brent - ARK Franklin Primary Academy, United Kingdom
29.4 km PM2.5: 9.1 µg/m³
27
Camden Kerbside, United Kingdom
30.0 km PM2.5: 6.5 µg/m³
19
Camden Kerbside, United Kingdom
30.0 km PM2.5: 4.6 µg/m³

What cities are near Hemel Hempstead?

4 Berkhamsted 32 St Albans 31 North Watford 25 Harpenden 31 Watford 4 Chesham 32 Bushey 11 Amersham on the Hill 23 Luton 11 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 2026-09-05T17:30 UTC.