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)
38
Good
Monroe, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.12 μg/m³
0
55
155
255
425
605+
40.98 ppb
0
55
71
86
201
201+
1.42 ppb
0
36
76
186
605
1005+
4.55 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Monroe, Ohio
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AQI 34
Good
6.00μg/m³
PM2.5
24.69μg/m³
PM10
36.55ppb
O3
1.43ppb
SO2
5.12ppb
NO2
0.14ppm
CO
AQI 33
Good
5.88μg/m³
PM2.5
24.88μg/m³
PM10
35.93ppb
O3
1.43ppb
SO2
5.10ppb
NO2
0.14ppm
CO
AQI 35
Good
5.53μg/m³
PM2.5
23.22μg/m³
PM10
37.84ppb
O3
1.26ppb
SO2
5.34ppb
NO2
0.14ppm
CO
AQI 33
Good
6.10μg/m³
PM2.5
24.61μg/m³
PM10
36.11ppb
O3
1.42ppb
SO2
5.12ppb
NO2
0.14ppm
CO
AQI 33
Good
5.51μg/m³
PM2.5
17.46μg/m³
PM10
35.18ppb
O3
1.33ppb
SO2
5.24ppb
NO2
0.14ppm
CO
AQI 33
Good
5.76μg/m³
PM2.5
20.54μg/m³
PM10
35.90ppb
O3
1.34ppb
SO2
5.30ppb
NO2
0.14ppm
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 07:00:00 on 2026-03-09.
In the last 24 hours, the best air quality in Monroe, Ohio was observed at 02:00:00 on 2026-03-09.
As of now, the AQI in Monroe, Ohio is 38, 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 5.476 μg/m3.
The PM10 concentration in Monroe, Ohio is 23.124 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Monroe, Ohio is 0.138 ppm.
Currently, Monroe, Ohio has a sulfur dioxide (SO2) concentration of 1.418 ppb.
The current ozone (O3) level in Monroe, Ohio at the moment is 40.981 ppm.
Nitrogen dioxide (NO2) level in Monroe, Ohio at the moment is 4.553 ppb.
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