Air Quality in Chelmsford, United Kingdom

Drizzle
8.2°C · 90.9% humidity
8.2°
Feels 3.5°
34
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
8 10pm
8
8
34 1am
28
22
19 4am
16
14
13 7am
12
11
10 10am
10
10
9 1pm
9
9
9 4pm
9
9
9 7pm
9
9
Station readings 4h ago
AQI 8
PM2.5 2.0 µg/m³ · 4h ago
CAMS model adj -16
24
24
24
24
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

26h · 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.

90.9%
Humidity
40.0 km/h
Wind WNW
1019.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
34
8.2 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

26h · 1 station
PM2.58.2 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
8.2
Median
8.2
Average
8.2
Low
8.2
High
PM2.5 µg/m³ · Model: 5.8 · Bias: -2.4
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
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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 2026-06-09T00:19 UTC.