Air Quality in Watford, United Kingdom

Rain
15.7°C · 89.9% humidity
15.7°
Feels 15.7°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
10 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
9 11pm
29
29
35 2am
33
32
31 5am
31
30
30 8am
30
9
9 11am
2
2
9 2pm
2
2
2 5pm
2
2
2 8pm
9
9
Station readings
4
CAMS model adj -25
34
54
54
54
54
54
54
54
54
54
54
34
34
27
27
34
27
27
27
27
27
27
34
34
AD 728×90

Air Quality Index Trend

26h · 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.

89.9%
Humidity
85.9 km/h
Wind SW
1010.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
35
8.33 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Watford?

Temperature & Precipitation

PM2.5 Trend

26h · 1 station
PM2.58.33 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (10 stations within 25 km)
8.33
Median
8.25
Average
1.0
Low
10.3
High
PM2.5 µg/m³ · Model: 7.0 · Bias: -1.3

What is the 7-day forecast for Watford?

08-03
34.6° 15.7°
3.06 mm
08-04
22.9° 14.1°
0.13 mm
08-05
22.3° 14.3°
0.25 mm
08-06
28.9° 13.6°
5.44 mm
08-07
25.8° 12.2°
1.06 mm
08-08
22.8° 12.6°
1.25 mm
08-09
19.8° 11.6°
Both models agree Avg diff: 3.2°C

Where are air quality stations near Watford?

38
Brent - Ikea, United Kingdom
14.9 km PM2.5: 9.1 µg/m³
13
Brent - Ikea, United Kingdom
14.9 km PM2.5: 3.1 µg/m³
42
Brent - Ikea, United Kingdom
14.9 km PM2.5: 10.1 µg/m³
42
Brent - Ikea, United Kingdom
14.9 km PM2.5: 10.1 µg/m³
33
Brent - Ikea, United Kingdom
14.9 km PM2.5: 7.9 µg/m³
32
Harlesden HP1
17.0 km PM2.5: 7.6 µg/m³
28
Harlesden LP1
17.1 km PM2.5: 6.8 µg/m³
32
Harlesden HP2
17.3 km PM2.5: 7.8 µg/m³
36
Harlesden LP2
17.3 km PM2.5: 8.6 µg/m³
42
Brent - ARK Franklin Primary Academy, United Kingdom
18.4 km PM2.5: 10.1 µg/m³

What cities are near Watford?

37 Bushey 32 North Watford 40 Pinner 40 Wealdstone 37 Borehamwood 39 Ruislip 40 Harrow 40 South Ruislip 34 St Albans 4 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 2026-08-08T01:03 UTC.