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)
22
Good
Hartford, Vermont
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.63 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.00 μg/m³
0
55
155
255
425
605+
22.21 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
0.22 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hartford, Vermont
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AQI 20
Good
3.30μg/m³
PM2.5
14.04μg/m³
PM10
21.70ppb
O3
0.34ppb
SO2
0.26ppb
NO2
0.14ppm
CO
AQI 20
Good
3.27μg/m³
PM2.5
14.00μg/m³
PM10
21.65ppb
O3
0.33ppb
SO2
0.25ppb
NO2
0.14ppm
CO
AQI 20
Good
3.26μg/m³
PM2.5
12.69μg/m³
PM10
22.00ppb
O3
0.59ppb
SO2
1.08ppb
NO2
0.16ppm
CO
AQI 33
Good
5.80μg/m³
PM2.5
15.00μg/m³
PM10
25.00ppb
O3
0.39ppb
SO2
1.11ppb
NO2
0.15ppm
CO
AQI 22
Good
1.59μg/m³
PM2.5
6.31μg/m³
PM10
23.82ppb
O3
0.73ppb
SO2
1.14ppb
NO2
0.16ppm
CO
AQI 22
Good
3.80μg/m³
PM2.5
17.00μg/m³
PM10
16.00ppb
O3
0.57ppb
SO2
1.10ppb
NO2
0.18ppm
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 02:00:00 on 2026-08-14.
The best air quality in Hartford, Vermont was recorded at 04:00:00 on 2026-08-14.
The real-time air quality index in Hartford, Vermont is 22, 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 3.627 μg/m3.
The current PM10 levels in Hartford, Vermont are 16 μg/m3.
The current carbon monoxide (CO) level in Hartford, Vermont is 0.139 ppm.
The current sulfur dioxide (SO2) levels in Hartford, Vermont are 0.297 ppb.
The current ozone (O3) levels at Hartford, Vermont is 22.214 ppm.
The current nitrogen dioxide (NO2) levels at Hartford, Vermont is 0.22 ppb.
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