Air Quality in Letchworth Garden City, United Kingdom
Windy
15.5°C · 68.5% humidity
15.5°
Feels 15.5°
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Letchworth 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 · 7 stnLetchworth 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.
68.5%
Humidity
71.1 km/h
Wind NE
1024.3 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
8.0 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Letchworth Garden City?
Temperature & Precipitation
PM2.5 Trend
48h · 7 stationsPM2.58.0 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
What is the 7-day forecast for Letchworth Garden City?
05-29
15.5° 11.9°
1.0 mm
05-30
17.7° 11.4°
1.69 mm
05-31
18.7° 8.0°
06-01
19.2° 8.6°
0.38 mm
06-02
19.1° 11.4°
2.06 mm
06-03
16.0° 10.5°
0.13 mm
06-04
27.7° 16.7°
4.81 mm
Both models agree
Avg diff: 3.8°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.