Air Quality in Hemel Hempstead, United Kingdom

Windy
13.5°C · 58.0% humidity
13.5°
Feels 13.5°
8
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
22 12am
22
22
8 3am
12
15
0 6am
0
0
0 9am
0
0
0 12pm
0
0
0 3pm
0
0
0 6pm
0
0
0 9pm
0
0
Station readings
4
9
12
CAMS model adj -32
54
54
54
54
54
54
34
27
25
25
25
25
25
25
27
27
27
27
27
27
27
25
25
25
AD 728×90

Air Quality Index Trend

46h · 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.

58.0%
Humidity
56.8 km/h
Wind ENE
1015.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
8
2.01 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Hemel Hempstead?

Temperature & Precipitation

PM2.5 Trend

46h · 1 station
PM2.52.01 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
2.01
Median
2.01
Average
2.01
Low
2.01
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +7.7

What is the 7-day forecast for Hemel Hempstead?

07-22
23.8° 13.5°
0.31 mm
07-23
18.9° 15.2°
0.81 mm
07-24
20.1° 14.2°
3.75 mm
07-25
29.0° 13.0°
0.06 mm
07-26
18.3° 12.8°
1.75 mm
07-27
26.8° 16.0°
4.88 mm
07-28
26.5° 15.9°
Both models agree Avg diff: 3.0°C

Where are air quality stations near Hemel Hempstead?

12
Great Missenden
18.9 km PM2.5: 2.9 µg/m³ PM10: 2.9 µg/m³
36
Harlesden HP1
28.2 km PM2.5: 8.7 µg/m³
33
Harlesden LP1
28.2 km PM2.5: 7.9 µg/m³
38
Harlesden HP2
28.4 km PM2.5: 9.2 µg/m³
42
Harlesden LP2
28.4 km PM2.5: 10.2 µg/m³
38
Camden Kerbside, United Kingdom
30.0 km PM2.5: 9.1 µg/m³
26
Camden Kerbside, United Kingdom
30.0 km PM2.5: 6.2 µg/m³
30
Camden - Coopers Lane, United Kingdom
33.0 km PM2.5: 7.2 µg/m³

What cities are near Hemel Hempstead?

8 Berkhamsted 50 St Albans 46 North Watford 40 Harpenden 45 Watford 8 Chesham 45 Bushey 8 Amersham on the Hill 26 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 2026-07-22T02:17 UTC.