Air Quality in Chelmsford, United Kingdom

Windy
12.8°C · 61.5% humidity
12.8°
Feels 12.8°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
10 12am
10
10
21 3am
18
16
14 6am
13
2
1 9am
1
1
1 12pm
0
0
0 3pm
0
0
0 6pm
0
0
0 9pm
0
0
Station readings
4
4
5
CAMS model adj -44
54
54
54
54
54
54
54
54
34
27
27
27
27
27
34
27
27
27
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

30h · 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.

61.5%
Humidity
44.6 km/h
Wind NE
1015.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
21
5.0 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Chelmsford?

Temperature & Precipitation

PM2.5 Trend

30h · 1 station
PM2.55.0 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
5.0
Median
5.0
Average
5.0
Low
5.0
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +5.0
Both models agree Avg diff: 2.8°C

Where are air quality stations near Chelmsford?

21
Stanford-le-Hope Roadside, United Kingdom
24.3 km PM2.5: 5.0 µg/m³
40
Stanford-le-Hope Roadside, United Kingdom
24.3 km PM2.5: 9.6 µg/m³
147
Stanford-le-Hope Roadside, United Kingdom
24.3 km PM2.5: 54.2 µg/m³
5
united-kingdom-bishops-stortford-edens-close
25.3 km 21.0°C 51.0% RH PM2.5: 1.3 µg/m³ PM10: 1.3 µg/m³
30
Southend-on-Sea, United Kingdom
25.7 km PM2.5: 7.2 µg/m³
33
Southend-on-Sea, United Kingdom
25.7 km PM2.5: 7.9 µg/m³

What cities are near Chelmsford?

22 Billericay 28 Witham 42 Maldon 23 Wickford 38 Braintree 28 Brentwood 21 Basildon 25 Rayleigh 22 Pitsea 23 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 2026-07-22T02:16 UTC.