Stay updated with real-time air quality in Hartford, Wisconsin 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)
16
Good
Hartford, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.82 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.08 μg/m³
0
55
155
255
425
605+
11.97 ppb
0
55
71
86
201
201+
1.12 ppb
0
36
76
186
605
1005+
6.43 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hartford, Wisconsin
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AQI 16
Good
2.86μg/m³
PM2.5
6.57μg/m³
PM10
12.59ppb
O3
1.03ppb
SO2
6.77ppb
NO2
0.23ppm
CO
AQI 16
Good
2.76μg/m³
PM2.5
7.61μg/m³
PM10
12.64ppb
O3
1.03ppb
SO2
6.79ppb
NO2
0.24ppm
CO
AQI 16
Good
2.88μg/m³
PM2.5
6.49μg/m³
PM10
15.07ppb
O3
1.03ppb
SO2
6.53ppb
NO2
0.23ppm
CO
AQI 16
Good
2.85μg/m³
PM2.5
8.37μg/m³
PM10
9.78ppb
O3
1.02ppb
SO2
6.93ppb
NO2
0.23ppm
CO
AQI 16
Good
2.89μg/m³
PM2.5
6.04μg/m³
PM10
13.19ppb
O3
1.03ppb
SO2
6.76ppb
NO2
0.23ppm
CO
AQI 16
Good
3.00μg/m³
PM2.5
7.06μg/m³
PM10
14.83ppb
O3
1.04ppb
SO2
6.53ppb
NO2
0.24ppm
CO
Air quality and pollutant data for Wisconsin, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Hartford, Wisconsin is updated every hour for accuracy.
In the past 24 hours, the air quality in Hartford, Wisconsin was at its worst at 12:00:00 on 2025-10-24.
In the last 24 hours, the best air quality in Hartford, Wisconsin was observed at 04:00:00 on 2025-10-23.
As of now, the AQI in Hartford, Wisconsin is 16, indicating Good conditions.
Hartford, Wisconsin air has the highest levels of PM2.5.
Poor air quality in Hartford, Wisconsin means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Hartford, Wisconsin are currently 2.816 μg/m3.
The PM10 concentration in Hartford, Wisconsin is 8.078 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hartford, Wisconsin is 0.247 ppm.
Currently, Hartford, Wisconsin has a sulfur dioxide (SO2) concentration of 1.12 ppb.
The current ozone (O3) level in Hartford, Wisconsin at the moment is 11.975 ppm.
Nitrogen dioxide (NO2) level in Hartford, Wisconsin at the moment is 6.426 ppb.
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