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)
21
Good
Colchester, Vermont
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.73 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.47 μg/m³
0
55
155
255
425
605+
22.84 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
1.37 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Colchester, Vermont
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AQI 24
Good
1.00μg/m³
PM2.5
4.91μg/m³
PM10
25.87ppb
O3
0.30ppb
SO2
1.47ppb
NO2
0.14ppm
CO
AQI 24
Good
1.00μg/m³
PM2.5
5.11μg/m³
PM10
26.04ppb
O3
0.31ppb
SO2
1.47ppb
NO2
0.14ppm
CO
AQI 23
Good
1.30μg/m³
PM2.5
7.53μg/m³
PM10
25.31ppb
O3
0.34ppb
SO2
1.46ppb
NO2
0.14ppm
CO
AQI 26
Good
1.23μg/m³
PM2.5
5.13μg/m³
PM10
28.14ppb
O3
0.32ppb
SO2
1.48ppb
NO2
0.15ppm
CO
AQI 23
Good
1.27μg/m³
PM2.5
8.24μg/m³
PM10
25.23ppb
O3
0.34ppb
SO2
1.46ppb
NO2
0.14ppm
CO
AQI 25
Good
0.92μg/m³
PM2.5
4.15μg/m³
PM10
26.53ppb
O3
0.31ppb
SO2
1.47ppb
NO2
0.14ppm
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 03:00:00 on 2025-10-21.
In the last 24 hours, the best air quality in Colchester, Vermont was observed at 06:00:00 on 2025-10-21.
As of now, the AQI in Colchester, Vermont is 21, indicating Good conditions.
Colchester, Vermont air has the highest levels of O3.
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 2.727 μg/m3.
The PM10 concentration in Colchester, Vermont is 11.474 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Colchester, Vermont is 0.144 ppm.
Currently, Colchester, Vermont has a sulfur dioxide (SO2) concentration of 0.257 ppb.
The current ozone (O3) level in Colchester, Vermont at the moment is 22.837 ppm.
Nitrogen dioxide (NO2) level in Colchester, Vermont at the moment is 1.369 ppb.
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