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)
18
Good
Hartford, Wisconsin
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.75 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.54 μg/m³
0
55
155
255
425
605+
19.34 ppb
0
55
71
86
201
201+
0.80 ppb
0
36
76
186
605
1005+
5.92 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hartford, Wisconsin
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AQI 38
Good
6.55μg/m³
PM2.5
28.90μg/m³
PM10
24.17ppb
O3
0.75ppb
SO2
5.26ppb
NO2
0.24ppm
CO
AQI 33
Good
6.31μg/m³
PM2.5
24.75μg/m³
PM10
24.42ppb
O3
0.76ppb
SO2
5.06ppb
NO2
0.24ppm
CO
AQI 38
Good
6.71μg/m³
PM2.5
37.60μg/m³
PM10
23.98ppb
O3
0.72ppb
SO2
5.45ppb
NO2
0.24ppm
CO
AQI 33
Good
6.14μg/m³
PM2.5
27.91μg/m³
PM10
24.06ppb
O3
0.81ppb
SO2
5.25ppb
NO2
0.25ppm
CO
AQI 38
Good
6.68μg/m³
PM2.5
33.01μg/m³
PM10
23.60ppb
O3
0.77ppb
SO2
5.46ppb
NO2
0.25ppm
CO
AQI 38
Good
6.79μg/m³
PM2.5
27.33μg/m³
PM10
24.16ppb
O3
0.67ppb
SO2
5.37ppb
NO2
0.23ppm
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 11:00:00 on 2025-09-05.
In the last 24 hours, the best air quality in Hartford, Wisconsin was observed at 11:00:00 on 2025-09-06.
As of now, the AQI in Hartford, Wisconsin is 18, indicating Good conditions.
Hartford, Wisconsin air has the highest levels of O3.
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 2.746 μg/m3.
The PM10 concentration in Hartford, Wisconsin is 10.544 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hartford, Wisconsin is 0.169 ppm.
Currently, Hartford, Wisconsin has a sulfur dioxide (SO2) concentration of 0.795 ppb.
The current ozone (O3) level in Hartford, Wisconsin at the moment is 19.339 ppm.
Nitrogen dioxide (NO2) level in Hartford, Wisconsin at the moment is 5.925 ppb.
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