Air Quality in Welwyn Garden City, United Kingdom
Windy
16.3°C · 65.2% humidity
16.3°
Feels 16.3°
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Welwyn Garden City's air quality — share it
AQI Forecast
25
3pm
25
25
33
6pm
31
29
28
9pm
27
27
26
12am
26
25
24
3am
24
25
25
6am
25
25
25
9am
27
27
27
12pm
25
27
Air Quality Index Trend
48h · 30 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.
65.2%
Humidity
77.5 km/h
Wind NE
1023.8 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.96 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Welwyn Garden City?
Temperature & Precipitation
PM2.5 Trend
48h · 30 stationsPM2.57.96 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
Station readings (2 stations within 25 km)
7.96
Median
8.4
Average
4.8
Low
12.0
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -1.7
What is the 7-day forecast for Welwyn Garden City?
05-29
16.3° 12.1°
1.38 mm
05-30
17.9° 11.5°
0.44 mm
05-31
19.3° 8.6°
06-01
19.9° 9.8°
0.44 mm
06-02
20.0° 12.6°
2.25 mm
06-03
16.9° 10.9°
0.06 mm
06-04
28.8° 17.5°
4.63 mm
Both models agree
Avg diff: 3.4°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 2026-05-29T17:50 UTC.