Air Quality in Welwyn Garden City, United Kingdom
Drizzle
16.4°C · 84.2% humidity
16.4°
Feels 16.4°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Welwyn Garden City's air quality — share it
AQI Forecast
27
11pm
34
54
30
2am
37
42
45
5am
48
49
51
8am
32
32
26
11am
26
26
27
2pm
27
27
27
5pm
27
27
27
8pm
27
27
Air Quality Index Trend
45h · 23 stnWelwyn Garden City'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.
84.2%
Humidity
82.1 km/h
Wind SW
1010.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.2 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Welwyn Garden City?
Temperature & Precipitation
PM2.5 Trend
45h · 23 stationsPM2.57.2 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
7.2
Median
7.2
Average
7.2
Low
7.2
High
PM2.5 µg/m³ · Model: 6.15 · Bias: -1.0
What is the 7-day forecast for Welwyn Garden City?
08-03
34.8° 16.0°
2.0 mm
08-04
23.3° 14.0°
0.13 mm
08-05
22.7° 14.7°
0.13 mm
08-06
29.8° 14.0°
6.13 mm
08-07
26.2° 13.0°
0.44 mm
08-08
23.2° 12.9°
1.56 mm
08-09
20.1° 12.4°
Both models agree
Avg diff: 3.2°C
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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 2026-08-08T01:05 UTC.