Air Quality in Watford, United Kingdom

Windy
13.6°C · 66.8% humidity
13.6°
Feels 13.6°
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
15 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
10 1am
10
10
33 4am
26
22
8 7am
6
4
3 10am
2
2
1 1pm
1
1
0 4pm
0
0
0 7pm
0
0
0 10pm
0
0
Station readings
9
12
8
CAMS model adj -44
54
54
54
54
54
54
34
27
27
27
27
27
27
27
27
27
27
27
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

46h · 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.

66.8%
Humidity
57.3 km/h
Wind ENE
1015.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
33
8.04 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Watford?

Temperature & Precipitation

PM2.5 Trend

46h · 1 station
PM2.58.04 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (15 stations within 25 km)
8.04
Median
7.93
Average
2.34
Low
13.1
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +1.7

What is the 7-day forecast for Watford?

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: 3.2°C

Where are air quality stations near Watford?

36
Harlesden HP1
17.0 km PM2.5: 8.7 µg/m³
32
Harlesden LP1
17.1 km PM2.5: 7.7 µg/m³
38
Harlesden HP2
17.3 km PM2.5: 9.1 µg/m³
40
Harlesden LP2
17.3 km PM2.5: 9.5 µg/m³
32
London Harlington, United Kingdom
18.8 km PM2.5: 7.7 µg/m³
17
London Harlington, United Kingdom
18.8 km PM2.5: 4.1 µg/m³
40
Hounslow Brentford, United Kingdom
19.4 km PM2.5: 9.6 µg/m³
38
Hounslow Brentford, United Kingdom
19.4 km PM2.5: 9.1 µg/m³
129
London Hillingdon Harmondsworth Os, United Kingdom
19.5 km PM2.5: 46.9 µg/m³
17
London N. Kensington, United Kingdom
19.5 km PM2.5: 4.1 µg/m³

What cities are near Watford?

35 Bushey 33 North Watford 36 Pinner 35 Wealdstone 35 Borehamwood 35 Ruislip 35 Harrow 35 South Ruislip 34 St Albans 10 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 2026-07-22T03:18 UTC.