Air Quality in Hemel Hempstead, United Kingdom

Drizzle
8.6°C · 86.8% humidity
8.6°
Feels 3.5°
7
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
18 4pm
15
11
4 7pm
17
17
17 10pm
17
17
17 1am
4
4
4 4am
4
17
17 7am
17
17
17 10am
17
17
17 1pm
29
29
Station readings
18
15
11
CAMS model adj -8
25
12
12
12
25
25
25
25
25
25
12
12
12
12
25
25
25
25
25
25
25
25
37
37
AD 728×90

PM2.5 Trend (24h)

29h · 15 stations
86.8%
Humidity
50.6 km/h
Wind NW
1011.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Temperature & Precipitation

PM2.51.66 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
1.66
Median
1.66
Average
1.66
Low
1.66
High
PM2.5 µg/m³ · Model: 17.65 · Bias: +16.0
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

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T19:30 UTC.