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)
27
Good
Williston, Vermont
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.82 μg/m³
0
55
155
255
425
605+
28.51 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
9.90 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Williston, Vermont
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AQI 33
Good
6.39μg/m³
PM2.5
29.46μg/m³
PM10
30.23ppb
O3
0.18ppb
SO2
4.96ppb
NO2
0.27ppm
CO
AQI 38
Good
6.81μg/m³
PM2.5
27.49μg/m³
PM10
29.05ppb
O3
0.20ppb
SO2
4.62ppb
NO2
0.27ppm
CO
AQI 33
Good
6.37μg/m³
PM2.5
29.79μg/m³
PM10
30.16ppb
O3
0.18ppb
SO2
4.95ppb
NO2
0.27ppm
CO
AQI 38
Good
6.83μg/m³
PM2.5
27.57μg/m³
PM10
28.37ppb
O3
0.20ppb
SO2
4.63ppb
NO2
0.27ppm
CO
AQI 33
Good
6.42μg/m³
PM2.5
29.49μg/m³
PM10
30.24ppb
O3
0.19ppb
SO2
4.89ppb
NO2
0.27ppm
CO
AQI 38
Good
6.70μg/m³
PM2.5
29.10μg/m³
PM10
28.36ppb
O3
0.21ppb
SO2
7.47ppb
NO2
0.27ppm
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 05:00:00 on 2025-12-07.
The best air quality in Williston, Vermont was recorded at 11:00:00 on 2025-12-07.
The real-time air quality index in Williston, Vermont is 27, currently categorized as Good.
The most common pollutant in Williston, Vermont is O3.
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 5.248 μg/m3.
The current PM10 levels in Williston, Vermont are 19.825 μg/m3.
The current carbon monoxide (CO) level in Williston, Vermont is 0.228 ppm.
The current sulfur dioxide (SO2) levels in Williston, Vermont are 0.198 ppb.
The current ozone (O3) levels at Williston, Vermont is 28.507 ppm.
The current nitrogen dioxide (NO2) levels at Williston, Vermont is 9.899 ppb.
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