Air Quality in Chelmsford, United Kingdom

Drizzle
18.1°C · 66.5% humidity
18.1°
Feels 18.1°
34
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated
2 1am
22
22
34 4am
31
28
26 7am
25
24
4 10am
1
1
1 1pm
0
0
0 4pm
0
0
0 7pm
0
0
2 10pm
2
2
Station readings
5
6
4
CAMS model adj -32
34
54
54
54
54
54
54
54
54
34
27
27
27
27
27
27
27
27
27
27
27
34
34
34
AD 728×90

Air Quality Index Trend

8h · 1 stn

Chelmsford'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.

66.5%
Humidity
94.8 km/h
Wind SW
1010.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
34
8.25 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Chelmsford?

Temperature & Precipitation

PM2.5 Trend

8h · 1 station
PM2.58.25 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250

What is the 7-day forecast for Chelmsford?

08-03
35.3° 15.4°
0.31 mm
08-04
23.8° 13.9°
0.06 mm
08-05
23.2° 13.4°
0.06 mm
08-06
30.9° 14.4°
3.56 mm
08-07
27.4° 13.9°
0.5 mm
08-08
23.2° 13.5°
2.31 mm
08-09
20.6° 12.3°
Both models agree Avg diff: 3.3°C

Where are air quality stations near Chelmsford?

38
Stanford-le-Hope Roadside, United Kingdom
24.3 km PM2.5: 9.1 µg/m³
4
united-kingdom-bishops-stortford-edens-close
25.3 km 20.0°C 45.0% RH PM2.5: 1.0 µg/m³ PM10: 1.3 µg/m³
26
Southend-on-Sea, United Kingdom
25.7 km PM2.5: 6.2 µg/m³

What cities are near Chelmsford?

31 Billericay 31 Witham 32 Maldon 31 Wickford 30 Braintree 25 Brentwood 32 Basildon 32 Rayleigh 32 Pitsea 32 South Benfleet
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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 2026-08-08T03:52 UTC.