Stay updated with real-time air quality in Colchester, Vermont featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
67
Moderate
Colchester, Vermont
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
18.17 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
58.17 μg/m³
0
55
155
255
425
605+
27.97 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
10.43 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Colchester, Vermont
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AQI 67
Moderate
17.71μg/m³
PM2.5
85.78μg/m³
PM10
36.43ppb
O3
0.41ppb
SO2
9.43ppb
NO2
0.22ppm
CO
AQI 67
Moderate
18.16μg/m³
PM2.5
84.09μg/m³
PM10
36.35ppb
O3
0.41ppb
SO2
9.42ppb
NO2
0.22ppm
CO
AQI 81
Moderate
25.18μg/m³
PM2.5
107.62μg/m³
PM10
34.27ppb
O3
0.42ppb
SO2
9.39ppb
NO2
0.22ppm
CO
AQI 66
Moderate
16.74μg/m³
PM2.5
66.07μg/m³
PM10
35.21ppb
O3
0.41ppb
SO2
9.15ppb
NO2
0.21ppm
CO
AQI 77
Moderate
23.39μg/m³
PM2.5
89.25μg/m³
PM10
35.13ppb
O3
0.42ppb
SO2
9.43ppb
NO2
0.22ppm
CO
AQI 69
Moderate
18.98μg/m³
PM2.5
85.46μg/m³
PM10
36.67ppb
O3
0.42ppb
SO2
9.50ppb
NO2
0.22ppm
CO
Air quality and pollutant data for Vermont, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Colchester, Vermont is updated every hour for accuracy.
In the past 24 hours, the air quality in Colchester, Vermont was at its worst at 10:00:00 on 2026-02-03.
In the last 24 hours, the best air quality in Colchester, Vermont was observed at 11:00:00 on 2026-02-03.
As of now, the AQI in Colchester, Vermont is 67, indicating Moderate conditions.
Colchester, Vermont air has the highest levels of PM2.5.
Poor air quality in Colchester, Vermont means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Colchester, Vermont are currently 18.167 μg/m3.
The PM10 concentration in Colchester, Vermont is 58.167 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Colchester, Vermont is 0.218 ppm.
Currently, Colchester, Vermont has a sulfur dioxide (SO2) concentration of 0.369 ppb.
The current ozone (O3) level in Colchester, Vermont at the moment is 27.966 ppm.
Nitrogen dioxide (NO2) level in Colchester, Vermont at the moment is 10.425 ppb.
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