Air Quality in Colchester, United Kingdom
Drizzle
17.8°C · 68.3% humidity
17.8°
Feels 17.8°
12
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Colchester's air quality — share it
AQI Forecast
Calibrated
13
11pm
13
13
12
2am
13
13
13
5am
20
13
20
8am
20
13
13
11am
13
13
13
2pm
13
13
13
5pm
13
13
20
8pm
20
20
Station readings
12
12
CAMS model
adj -14
27
27
27
27
27
27
27
34
27
34
34
27
27
27
27
27
27
27
27
27
27
34
34
34
Air Quality Index Trend
46h · 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.
68.3%
Humidity
65.6 km/h
Wind SW
1010.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
3.0 µg/m³
PM10▲
13.7 µg/m³
050100150200300500
What is the weather forecast for Colchester?
Temperature & Precipitation
PM2.5 Trend
46h · 1 stationPM2.53.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
3.0
Median
3.0
Average
3.0
Low
3.0
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +3.2
What is the 7-day forecast for Colchester?
08-03
34.1° 15.6°
0.44 mm
08-04
22.4° 13.3°
0.06 mm
08-05
23.2° 13.0°
0.06 mm
08-06
30.7° 15.2°
0.19 mm
08-07
27.6° 13.6°
2.19 mm
08-08
22.6° 14.8°
3.94 mm
08-09
20.3° 12.3°
Both models agree
Avg diff: 3.1°C
Where are air quality stations near Colchester?
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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 2026-08-08T01:02 UTC.