Air Quality in Chelmsford, United Kingdom
Drizzle
8.2°C · 90.9% humidity
8.2°
Feels 3.5°
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
AQI Forecast
Calibrated
8
12am
8
9
13
3am
9
9
9
6am
9
9
9
9am
9
9
9
12pm
9
9
9
3pm
9
9
9
6pm
9
9
9
9pm
11
11
Station readings
6h ago
AQI 8
PM2.5 2.0 µg/m³ · 6h ago
CAMS model
adj -16
24
24
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
27
27
Air Quality Index Trend
25h · 1 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.
90.9%
Humidity
40.0 km/h
Wind WNW
1019.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
3.1 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Chelmsford?
Temperature & Precipitation
PM2.5 Trend
25h · 1 stationPM2.53.1 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
3.1
Median
3.1
Average
3.1
Low
3.1
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +2.8
What is the 7-day forecast for Chelmsford?
06-09
17.4° 8.2°
0.19 mm
06-10
15.2° 11.0°
8.88 mm
06-11
26.4° 14.2°
2.63 mm
06-12
20.9° 10.1°
06-13
22.7° 9.3°
0.19 mm
06-14
17.8° 10.9°
2.63 mm
06-15
15.3° 10.5°
8.06 mm
Both models agree
Avg diff: 3.9°C
Where are air quality stations near Chelmsford?
25
Stanford-le-Hope Roadside, United Kingdom
61
Stanford-le-Hope Roadside, United Kingdom
12
Stanford-le-Hope Roadside, United Kingdom
–
united-kingdom-bishops-stortford-edens-close
32
Southend-on-Sea, United Kingdom
59
Southend-on-Sea, United Kingdom
What cities are near Chelmsford?
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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 2026-06-09T02:42 UTC.