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)
67
Moderate
Hartford, Wisconsin
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
17.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
33.29 μg/m³
0
55
155
255
425
605+
44.39 ppb
0
55
71
86
201
201+
1.85 ppb
0
36
76
186
605
1005+
5.56 ppb
0
54
101
361
1250
2050+
0.59 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hartford, Wisconsin
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AQI 79
Moderate
22.93μg/m³
PM2.5
112.21μg/m³
PM10
42.81ppb
O3
1.13ppb
SO2
2.30ppb
NO2
0.21ppm
CO
AQI 81
Moderate
19.23μg/m³
PM2.5
115.99μg/m³
PM10
38.62ppb
O3
1.12ppb
SO2
2.22ppb
NO2
0.20ppm
CO
AQI 67
Moderate
18.48μg/m³
PM2.5
39.15μg/m³
PM10
41.40ppb
O3
1.07ppb
SO2
2.26ppb
NO2
0.20ppm
CO
AQI 87
Moderate
27.22μg/m³
PM2.5
127.80μg/m³
PM10
43.89ppb
O3
1.27ppb
SO2
2.35ppb
NO2
0.22ppm
CO
AQI 69
Moderate
18.82μg/m³
PM2.5
45.09μg/m³
PM10
38.69ppb
O3
1.15ppb
SO2
2.32ppb
NO2
0.22ppm
CO
AQI 67
Moderate
18.40μg/m³
PM2.5
38.22μg/m³
PM10
41.60ppb
O3
1.03ppb
SO2
2.25ppb
NO2
0.19ppm
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 06:00:00 on 2025-07-21.
In the last 24 hours, the best air quality in Hartford, Wisconsin was observed at 03:00:00 on 2025-07-22.
As of now, the AQI in Hartford, Wisconsin is 69, indicating Moderate 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 18.504 μg/m3.
The PM10 concentration in Hartford, Wisconsin is 49.342 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hartford, Wisconsin is 0.179 ppm.
Currently, Hartford, Wisconsin has a sulfur dioxide (SO2) concentration of 1.016 ppb.
The current ozone (O3) level in Hartford, Wisconsin at the moment is 41.724 ppm.
Nitrogen dioxide (NO2) level in Hartford, Wisconsin at the moment is 2.266 ppb.
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