Air Quality in Watford, United Kingdom

Clear
15.5°C · 48.1% humidity
15.5°
Feels 15.5°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
19 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
1 2pm
1
8
28 5pm
22
18
35 8pm
45
61
60 11pm
59
58
41 2am
41
41
40 5am
28
28
28 8am
28
28
8 11am
8
8
Station readings
3
4
CAMS model adj -26
27
27
34
34
34
34
54
66
83
83
83
83
66
66
66
66
54
54
54
54
54
34
34
34
AD 728×90

Air Quality Index Trend

21h · 1 stn

Watford'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
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
28
6.79 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Watford?

Temperature & Precipitation

PM2.5 Trend

21h · 1 station
PM2.56.79 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (19 stations within 25 km)
6.79
Median
6.67
Average
0.83
Low
16.9
High
PM2.5 µg/m³ · Model: 7.0 · Bias: +0.2

What is the 7-day forecast for Watford?

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: 3.5°C

Where are air quality stations near Watford?

46
Brent - Ikea, United Kingdom
14.9 km PM2.5: 11.0 µg/m³
21
Brent - Ikea, United Kingdom
14.9 km PM2.5: 5.0 µg/m³
25
Brent - Ikea, United Kingdom
14.9 km PM2.5: 6.0 µg/m³
38
Brent - ARK Franklin Primary Academy, United Kingdom
18.4 km PM2.5: 9.1 µg/m³
32
London Harlington, United Kingdom
18.8 km PM2.5: 7.7 µg/m³
15
Enfield - Bowes Primary School, United Kingdom
19.2 km PM2.5: 3.6 µg/m³
15
Enfield - Bowes Primary School, United Kingdom
19.2 km PM2.5: 3.6 µg/m³
30
Hounslow Brentford, United Kingdom
19.4 km PM2.5: 7.2 µg/m³
23
Hounslow Brentford, United Kingdom
19.4 km PM2.5: 5.5 µg/m³
23
Hounslow Brentford, United Kingdom
19.4 km PM2.5: 5.5 µg/m³

What cities are near Watford?

29 Bushey 25 North Watford 31 Pinner 30 Wealdstone 28 Borehamwood 31 Ruislip 31 Harrow 32 South Ruislip 25 St Albans 3 Hemel Hempstead
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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 2026-09-05T16:35 UTC.