Air Quality in Welwyn Garden City, United Kingdom
Clear
16.2°C · 44.2% humidity
16.2°
Feels 16.2°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Welwyn Garden City's air quality — share it
AQI Forecast
27
5pm
27
27
25
8pm
48
49
31
11pm
32
32
53
2am
53
53
54
5am
54
54
54
8am
54
54
34
11am
34
34
27
2pm
27
27
Air Quality Index Trend
45h · 21 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.
44.2%
Humidity
26.6 km/h
Wind N
1029.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.1 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Welwyn Garden City?
Temperature & Precipitation
PM2.5 Trend
45h · 21 stationsPM2.56.1 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
6.1
Median
6.23
Average
4.6
Low
9.1
High
PM2.5 µg/m³ · Model: 7.0 · Bias: +0.9
What is the 7-day forecast for Welwyn Garden City?
09-05
16.2° 11.1°
0.13 mm
09-06
18.4° 10.7°
0.06 mm
09-07
14.7° 13.2°
1.44 mm
09-08
21.8° 8.9°
0.88 mm
09-09
17.5° 9.5°
0.56 mm
09-10
21.8° 14.5°
09-11
16.6° 11.8°
0.31 mm
Both models agree
Avg diff: 3.0°C
Where are air quality stations near Welwyn Garden City?
19
Enfield - Bowes Primary School, United Kingdom
25
Haringey Roadside, United Kingdom
2
Haringey Roadside, United Kingdom
21
Haringey Roadside, United Kingdom
38
Haringey Roadside, United Kingdom
38
Haringey Roadside, United Kingdom
What cities are near Welwyn Garden City?
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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 2026-09-05T19:47 UTC.