Stay updated with real-time air quality in Williston, 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)
66
Moderate
Williston, Vermont
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
17.06 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
60.22 μg/m³
0
55
155
255
425
605+
37.86 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
10.47 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Williston, Vermont
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AQI 66
Moderate
16.77μg/m³
PM2.5
61.31μg/m³
PM10
35.46ppb
O3
0.36ppb
SO2
10.45ppb
NO2
0.22ppm
CO
AQI 75
Moderate
22.30μg/m³
PM2.5
85.57μg/m³
PM10
30.63ppb
O3
0.38ppb
SO2
10.46ppb
NO2
0.22ppm
CO
AQI 64
Moderate
16.15μg/m³
PM2.5
60.11μg/m³
PM10
36.85ppb
O3
0.36ppb
SO2
10.45ppb
NO2
0.22ppm
CO
AQI 77
Moderate
22.61μg/m³
PM2.5
99.01μg/m³
PM10
31.42ppb
O3
0.38ppb
SO2
10.46ppb
NO2
0.22ppm
CO
AQI 67
Moderate
18.17μg/m³
PM2.5
58.17μg/m³
PM10
27.97ppb
O3
0.37ppb
SO2
10.43ppb
NO2
0.22ppm
CO
AQI 62
Moderate
14.93μg/m³
PM2.5
61.73μg/m³
PM10
28.50ppb
O3
0.31ppb
SO2
10.38ppb
NO2
0.22ppm
CO
Air quality measurements for Vermont, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Williston, Vermont is updated on an hourly basis.
The worst air quality in Williston, Vermont was recorded at 10:00:00 on 2026-02-03.
The best air quality in Williston, Vermont was recorded at 10:00:00 on 2026-02-03.
The real-time air quality index in Williston, Vermont is 66, currently categorized as Moderate.
The most common pollutant in Williston, Vermont is PM2.5.
If the air quality in Williston, Vermont is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Williston, Vermont at present are 17.056 μg/m3.
The current PM10 levels in Williston, Vermont are 60.218 μg/m3.
The current carbon monoxide (CO) level in Williston, Vermont is 0.219 ppm.
The current sulfur dioxide (SO2) levels in Williston, Vermont are 0.365 ppb.
The current ozone (O3) levels at Williston, Vermont is 37.86 ppm.
The current nitrogen dioxide (NO2) levels at Williston, Vermont is 10.466 ppb.
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