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)
38
Good
Hartford, Vermont
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.42 μg/m³
0
55
155
255
425
605+
25.84 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
8.32 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hartford, Vermont
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AQI 33
Good
6.28μg/m³
PM2.5
27.89μg/m³
PM10
26.22ppb
O3
0.72ppb
SO2
8.35ppb
NO2
0.21ppm
CO
AQI 33
Good
5.73μg/m³
PM2.5
24.30μg/m³
PM10
26.32ppb
O3
0.72ppb
SO2
8.46ppb
NO2
0.21ppm
CO
AQI 33
Good
6.38μg/m³
PM2.5
19.64μg/m³
PM10
29.68ppb
O3
0.49ppb
SO2
7.27ppb
NO2
0.31ppm
CO
AQI 44
Good
8.10μg/m³
PM2.5
18.01μg/m³
PM10
24.00ppb
O3
0.30ppb
SO2
6.30ppb
NO2
0.28ppm
CO
AQI 34
Good
5.08μg/m³
PM2.5
21.91μg/m³
PM10
36.86ppb
O3
0.72ppb
SO2
14.21ppb
NO2
0.24ppm
CO
AQI 31
Good
5.00μg/m³
PM2.5
22.00μg/m³
PM10
34.00ppb
O3
0.54ppb
SO2
8.41ppb
NO2
0.37ppm
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 07:00:00 on 2025-12-28.
The best air quality in Hartford, Vermont was recorded at 01:00:00 on 2025-12-28.
The real-time air quality index in Hartford, Vermont is 38, currently categorized as Good.
The most common pollutant in Hartford, Vermont is PM2.5.
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 6.57 μg/m3.
The current PM10 levels in Hartford, Vermont are 29.421 μg/m3.
The current carbon monoxide (CO) level in Hartford, Vermont is 0.206 ppm.
The current sulfur dioxide (SO2) levels in Hartford, Vermont are 0.735 ppb.
The current ozone (O3) levels at Hartford, Vermont is 25.836 ppm.
The current nitrogen dioxide (NO2) levels at Hartford, Vermont is 8.323 ppb.
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