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)
44
Good
Monroe, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.96 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.65 μg/m³
0
55
155
255
425
605+
47.84 ppb
0
55
71
86
201
201+
1.70 ppb
0
36
76
186
605
1005+
8.14 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Monroe, Ohio
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AQI 43
Good
5.56μg/m³
PM2.5
20.45μg/m³
PM10
45.53ppb
O3
1.53ppb
SO2
8.32ppb
NO2
0.12ppm
CO
AQI 43
Good
5.85μg/m³
PM2.5
24.56μg/m³
PM10
46.26ppb
O3
1.47ppb
SO2
8.41ppb
NO2
0.12ppm
CO
AQI 44
Good
5.32μg/m³
PM2.5
21.14μg/m³
PM10
47.44ppb
O3
1.70ppb
SO2
8.38ppb
NO2
0.12ppm
CO
AQI 43
Good
5.62μg/m³
PM2.5
20.07μg/m³
PM10
46.06ppb
O3
1.55ppb
SO2
8.34ppb
NO2
0.12ppm
CO
AQI 43
Good
4.90μg/m³
PM2.5
15.58μg/m³
PM10
45.89ppb
O3
1.75ppb
SO2
7.98ppb
NO2
0.12ppm
CO
AQI 45
Good
4.34μg/m³
PM2.5
13.74μg/m³
PM10
48.98ppb
O3
1.74ppb
SO2
7.88ppb
NO2
0.12ppm
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 09:00:00 on 2026-07-23.
In the last 24 hours, the best air quality in Monroe, Ohio was observed at 03:00:00 on 2026-07-23.
As of now, the AQI in Monroe, Ohio is 44, indicating Good conditions.
Monroe, Ohio air has the highest levels of O3.
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 5.958 μg/m3.
The PM10 concentration in Monroe, Ohio is 24.647 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Monroe, Ohio is 0.345 ppm.
Currently, Monroe, Ohio has a sulfur dioxide (SO2) concentration of 1.702 ppb.
The current ozone (O3) level in Monroe, Ohio at the moment is 47.835 ppm.
Nitrogen dioxide (NO2) level in Monroe, Ohio at the moment is 8.141 ppb.
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