Stay updated with real-time air quality in Monroe, Ohio 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)
56
Moderate
Monroe, Ohio
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
12.32 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
53.34 μg/m³
0
55
155
255
425
605+
36.58 ppb
0
55
71
86
201
201+
1.97 ppb
0
36
76
186
605
1005+
5.71 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Monroe, Ohio
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AQI 38
Good
6.69μg/m³
PM2.5
27.91μg/m³
PM10
24.22ppb
O3
1.48ppb
SO2
9.87ppb
NO2
0.25ppm
CO
AQI 38
Good
7.16μg/m³
PM2.5
31.32μg/m³
PM10
24.09ppb
O3
1.45ppb
SO2
9.81ppb
NO2
0.25ppm
CO
AQI 28
Good
4.30μg/m³
PM2.5
17.82μg/m³
PM10
30.44ppb
O3
1.55ppb
SO2
10.39ppb
NO2
0.26ppm
CO
AQI 38
Good
6.78μg/m³
PM2.5
27.80μg/m³
PM10
25.27ppb
O3
1.50ppb
SO2
9.85ppb
NO2
0.25ppm
CO
AQI 29
Good
5.48μg/m³
PM2.5
23.30μg/m³
PM10
30.71ppb
O3
1.47ppb
SO2
12.78ppb
NO2
0.26ppm
CO
AQI 38
Good
6.52μg/m³
PM2.5
14.23μg/m³
PM10
28.64ppb
O3
1.46ppb
SO2
11.47ppb
NO2
0.25ppm
CO
Air quality and pollutant data for Ohio, 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 Monroe, Ohio is updated every hour for accuracy.
In the past 24 hours, the air quality in Monroe, Ohio was at its worst at 02:00:00 on 2025-09-02.
In the last 24 hours, the best air quality in Monroe, Ohio was observed at 09:00:00 on 2025-09-01.
As of now, the AQI in Monroe, Ohio is 38, indicating Good conditions.
Monroe, Ohio air has the highest levels of PM2.5.
Poor air quality in Monroe, Ohio means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Monroe, Ohio are currently 7.129 μg/m3.
The PM10 concentration in Monroe, Ohio is 29.292 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Monroe, Ohio is 0.231 ppm.
Currently, Monroe, Ohio has a sulfur dioxide (SO2) concentration of 1.548 ppb.
The current ozone (O3) level in Monroe, Ohio at the moment is 23.013 ppm.
Nitrogen dioxide (NO2) level in Monroe, Ohio at the moment is 11.607 ppb.
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