Air Quality in Colchester, United States
Windy
14.3°C · 75.3% humidity
14.3°
Feels 14.3°
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Colchester's air quality — share it
AQI Forecast
24
6am
24
24
24
9am
25
27
27
12pm
27
25
25
3pm
25
25
25
6pm
27
27
27
9pm
34
34
54
12am
54
54
34
3am
27
27
Air Quality Index Trend
32h · 1 stnColchester's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
75.3%
Humidity
57.7 km/h
Wind S
1014.2 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.8 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Colchester?
Temperature & Precipitation
PM2.5 Trend
32h · 1 stationPM2.55.8 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX9.4
Very High
Station readings (1 station within 25 km)
5.8
Median
5.8
Average
5.8
Low
5.8
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +0.2
What is the 7-day forecast for Colchester?
06-09
21.6° 11.6°
1.31 mm
06-10
17.6° 12.7°
3.44 mm
06-11
20.8° 10.1°
0.31 mm
06-12
19.1° 14.6°
9.31 mm
06-13
24.8° 16.8°
24.25 mm
06-14
23.9° 12.8°
9.13 mm
06-15
21.9° 16.3°
8.19 mm
Both models agree
Avg diff: 6.0°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 2026-06-09T13:30 UTC.