Stay updated with real-time air quality in Hartford, 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)
44
Good
Hartford, Vermont
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.12 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
36.05 μg/m³
0
55
155
255
425
605+
19.26 ppb
0
55
71
86
201
201+
0.52 ppb
0
36
76
186
605
1005+
7.90 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hartford, Vermont
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AQI 19
Good
2.36μg/m³
PM2.5
10.22μg/m³
PM10
20.06ppb
O3
0.27ppb
SO2
9.06ppb
NO2
0.30ppm
CO
AQI 19
Good
2.34μg/m³
PM2.5
10.14μg/m³
PM10
20.04ppb
O3
0.27ppb
SO2
9.12ppb
NO2
0.30ppm
CO
AQI 24
Good
2.13μg/m³
PM2.5
7.91μg/m³
PM10
25.95ppb
O3
0.26ppb
SO2
9.05ppb
NO2
0.30ppm
CO
AQI 22
Good
3.80μg/m³
PM2.5
14.00μg/m³
PM10
15.01ppb
O3
0.30ppb
SO2
4.38ppb
NO2
0.30ppm
CO
AQI 30
Good
1.40μg/m³
PM2.5
5.99μg/m³
PM10
32.16ppb
O3
0.30ppb
SO2
8.63ppb
NO2
0.22ppm
CO
AQI 44
Good
7.90μg/m³
PM2.5
34.98μg/m³
PM10
20.00ppb
O3
0.19ppb
SO2
11.04ppb
NO2
0.30ppm
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 Hartford, Vermont is updated on an hourly basis.
The worst air quality in Hartford, Vermont was recorded at 09:00:00 on 2025-11-02.
The best air quality in Hartford, Vermont was recorded at 03:00:00 on 2025-11-02.
The real-time air quality index in Hartford, Vermont is 19, currently categorized as Good.
The most common pollutant in Hartford, Vermont is O3.
If the air quality in Hartford, Vermont is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Hartford, Vermont at present are 2.382 μg/m3.
The current PM10 levels in Hartford, Vermont are 10.299 μg/m3.
The current carbon monoxide (CO) level in Hartford, Vermont is 0.299 ppm.
The current sulfur dioxide (SO2) levels in Hartford, Vermont are 0.269 ppb.
The current ozone (O3) levels at Hartford, Vermont is 20.016 ppm.
The current nitrogen dioxide (NO2) levels at Hartford, Vermont is 9.05 ppb.
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