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)
19
Good
Williston, Vermont
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
5.10 μg/m³
0
55
155
255
425
605+
20.84 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
1.96 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Williston, Vermont
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AQI 19
Good
2.52μg/m³
PM2.5
5.30μg/m³
PM10
20.82ppb
O3
0.29ppb
SO2
1.98ppb
NO2
0.13ppm
CO
AQI 19
Good
2.60μg/m³
PM2.5
5.03μg/m³
PM10
20.62ppb
O3
0.31ppb
SO2
2.01ppb
NO2
0.13ppm
CO
AQI 19
Good
2.50μg/m³
PM2.5
5.33μg/m³
PM10
20.87ppb
O3
0.29ppb
SO2
1.97ppb
NO2
0.13ppm
CO
AQI 19
Good
2.60μg/m³
PM2.5
5.02μg/m³
PM10
20.61ppb
O3
0.31ppb
SO2
2.01ppb
NO2
0.13ppm
CO
AQI 19
Good
2.56μg/m³
PM2.5
5.35μg/m³
PM10
20.75ppb
O3
0.30ppb
SO2
2.00ppb
NO2
0.13ppm
CO
AQI 19
Good
3.00μg/m³
PM2.5
15.60μg/m³
PM10
20.22ppb
O3
0.32ppb
SO2
1.78ppb
NO2
0.13ppm
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 2026-09-27.
The best air quality in Williston, Vermont was recorded at 09:00:00 on 2026-09-28.
The real-time air quality index in Williston, Vermont is 19, 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 2.477 μg/m3.
The current PM10 levels in Williston, Vermont are 5.1 μg/m3.
The current carbon monoxide (CO) level in Williston, Vermont is 0.129 ppm.
The current sulfur dioxide (SO2) levels in Williston, Vermont are 0.29 ppb.
The current ozone (O3) levels at Williston, Vermont is 20.838 ppm.
The current nitrogen dioxide (NO2) levels at Williston, Vermont is 1.96 ppb.
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