What is the air quality in Colchester today?

The current Air Quality Index (AQI) in Colchester is 17 (Good). PM2.5 concentration is 4.0 µg/m³.

What is the temperature in Colchester right now?

The current temperature in Colchester is 11.5°C (feels like 11.5°C). Humidity is 80.7% and wind speed is 40.2 km/h.

Is it safe to go outside in Colchester?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Colchester, United Kingdom

Drizzle

11.5°C · 80.7% humidity

11.5°

Feels 11.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

45h · 1 stn

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Colchester'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.

80.7%

Humidity

40.2 km/h

Wind N

1019.1 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.0 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Colchester?

Temperature & Precipitation

PM2.5 Trend

45h · 1 station

PM2.54.0 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (1 station within 25 km)

4.0

Median

4.0

Average

4.0

Low

4.0

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +2.0

What is the 7-day forecast for Colchester?

10-21

11.5° 8.0°

0.38 mm

10-22

19.2° 7.4°

0.06 mm

10-23

13.6° 8.9°

13.94 mm

10-24

12.7° 8.4°

0.06 mm

10-25

15.1° 9.3°

5.19 mm

10-26

11.9° 7.2°

0.69 mm

10-27

17.7° 5.8°

0.88 mm

Both models agree Avg diff: 3.0°C

Where are air quality stations near Colchester?

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Great Oakley Village

19.7 km 8.9°C 92.0% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

What cities are near Colchester?

31 Sudbury 17 Clacton-on-Sea 37 Witham 30 Maldon 35 Braintree 17 Frinton-on-Sea 17 Walton-on-the-Naze 17 Ipswich 17 Harwich 17 Felixstowe

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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 2026-10-21T15:00 UTC.