Air Quality in Chelmsford, United Kingdom
Partly Cloudy
16.0°C · 54.1% humidity
16.0°
Feels 16.0°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Chelmsford's air quality — share it
AQI Forecast
Calibrated
12
1pm
5
5
21
4pm
23
20
18
7pm
36
35
46
10pm
46
45
45
1am
33
44
44
4am
44
44
44
7am
32
32
32
10am
12
12
Station readings
11h ago
AQI 3
PM2.5 0.8 µg/m³ · 11h ago
Air Quality Index Trend
45h · 15 stnChelmsford'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.
54.1%
Humidity
30.3 km/h
Wind SSE
1029.2 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.0 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Chelmsford?
Temperature & Precipitation
PM2.5 Trend
45h · 15 stationsPM2.55.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
Station readings (1 station within 25 km)
5.0
Median
5.0
Average
5.0
Low
5.0
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +1.1
What is the 7-day forecast for Chelmsford?
09-05
16.0° 10.7°
09-06
19.6° 11.0°
09-07
15.5° 13.5°
0.94 mm
09-08
20.7° 9.6°
2.31 mm
09-09
17.1° 9.7°
0.38 mm
09-10
22.5° 14.8°
0.06 mm
09-11
17.5° 12.1°
0.13 mm
Both models agree
Avg diff: 3.2°C
Where are air quality stations near Chelmsford?
21
Stanford-le-Hope Roadside, United Kingdom
–
united-kingdom-bishops-stortford-edens-close
30
Southend-on-Sea, United Kingdom
What cities are near Chelmsford?
Get AQI alerts for Chelmsford
Notify me when air quality reaches:
Free · No account · Unsubscribe any time
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T15:53 UTC.