What is the air quality in Colchester today?

The current Air Quality Index (AQI) in Colchester is 47 (Good). PM2.5 concentration is 11.22 µg/m³.

What is the temperature in Colchester right now?

The current temperature in Colchester is 22.9°C (feels like 22.9°C). Humidity is 76.2% and wind speed is 9.1 km/h.

Is it safe to go outside in Colchester?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Colchester, United States

Drizzle

22.9°C · 76.2% humidity

22.9°

Feels 22.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

34 6pm

47 9pm

31 12am

27 3am

25 6am

24 9am

24 12pm

24 3pm

View AQI history for Colchester →

Colchester's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

76.2%

Humidity

9.1 km/h

Wind ENE

1014.2 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

11.22 µg/m³

PM10

20.55 µg/m³

050100150200300500

What is the weather forecast for Colchester?

Temperature & Precipitation

PM2.511.22 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX0.7

Low

What is the 7-day forecast for Colchester?

07-22

22.9° 19.8°

0.56 mm

07-23

21.6° 15.9°

7.56 mm

07-24

21.2° 15.9°

5.12 mm

07-25

21.9° 18.8°

15.25 mm

07-26

20.7° 17.6°

5.63 mm

07-27

26.2° 19.1°

2.06 mm

07-28

28.8° 21.0°

1.13 mm

Both models agree Avg diff: 2.5°C

Where are air quality stations near Colchester?

Underhill, Vermont, USA

22.2 km PM2.5: 9.1 µg/m³

What cities are near Colchester?

56 South Burlington 38 Plattsburgh 64 Saint-Jean-sur-Richelieu 60 Saint-Constant 66 Candiac 64 Granby 78 La Prairie 55 Sainte-Catherine 65 Chambly 102 Brossard

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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 2026-07-22T01:51 UTC.