Air Quality in Colchester, United Kingdom
Windy
13.5°C · 75.1% humidity
13.5°
Feels 13.5°
14
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Colchester's air quality — share it
AQI Forecast
Calibrated
14
1am
14
14
14
4am
20
24
7
7am
9
3
4
10am
12
13
13
1pm
13
6
5
4pm
5
5
5
7pm
5
5
5
10pm
5
5
Station readings
12
12
17
CAMS model
adj -20
34
34
34
54
54
54
34
34
27
27
34
34
34
34
27
25
25
25
25
25
25
25
25
25
Air Quality Index Trend
47h · 1 stnColchester'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.
75.1%
Humidity
42.2 km/h
Wind NE
1016.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
3.33 µg/m³
PM10▲
20.55 µg/m³
050100150200300500
What is the weather forecast for Colchester?
Temperature & Precipitation
PM2.5 Trend
47h · 1 stationPM2.53.33 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
3.33
Median
3.33
Average
3.33
Low
3.33
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +6.7
What is the 7-day forecast for Colchester?
07-22
25.7° 12.4°
3.62 mm
07-23
19.2° 14.9°
1.75 mm
07-24
20.3° 15.2°
3.69 mm
07-25
30.2° 13.7°
07-26
22.0° 13.1°
0.88 mm
07-27
26.9° 16.5°
0.56 mm
07-28
24.1° 15.8°
Both models agree
Avg diff: 2.9°C
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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 2026-07-22T03:18 UTC.