Air Quality in Letchworth Garden City, United Kingdom
Windy
13.0°C · 76.8% humidity
13.0°
Feels 13.0°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Letchworth Garden City's air quality — share it
AQI Forecast
54
1am
54
54
40
4am
24
20
20
7am
21
22
23
10am
26
26
26
1pm
27
27
27
4pm
25
25
25
7pm
25
25
25
10pm
25
25
Air Quality Index Trend
48h · 4 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.
76.8%
Humidity
45.8 km/h
Wind NE
1016.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.65 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Letchworth Garden City?
Temperature & Precipitation
PM2.5 Trend
48h · 4 stationsPM2.59.65 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Letchworth Garden City?
07-22
24.3° 12.2°
0.56 mm
07-23
18.8° 14.6°
1.37 mm
07-24
22.8° 14.8°
4.94 mm
07-25
29.6° 13.1°
07-26
18.2° 12.1°
1.63 mm
07-27
26.8° 15.9°
3.31 mm
07-28
26.6° 15.6°
Both models agree
Avg diff: 2.6°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 2026-07-22T03:25 UTC.