Stay updated with real-time air quality in Lima, 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)
50
Good
Lima, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.01 μg/m³
0
55
155
255
425
605+
53.95 ppb
0
55
71
86
201
201+
0.89 ppb
0
36
76
186
605
1005+
6.98 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Lima, Ohio
Lima, Ohio
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AQI 58
Moderate
12.79μg/m³
PM2.5
39.96μg/m³
PM10
57.22ppb
O3
1.25ppb
SO2
4.51ppb
NO2
0.25ppm
CO
AQI 44
Good
8.29μg/m³
PM2.5
35.55μg/m³
PM10
48.41ppb
O3
0.84ppb
SO2
4.14ppb
NO2
0.20ppm
CO
AQI 51
Moderate
7.87μg/m³
PM2.5
28.04μg/m³
PM10
54.79ppb
O3
0.76ppb
SO2
4.51ppb
NO2
0.25ppm
CO
AQI 58
Moderate
12.85μg/m³
PM2.5
53.95μg/m³
PM10
55.37ppb
O3
1.09ppb
SO2
8.17ppb
NO2
0.23ppm
CO
AQI 52
Moderate
10.18μg/m³
PM2.5
39.21μg/m³
PM10
54.38ppb
O3
1.07ppb
SO2
7.52ppb
NO2
0.23ppm
CO
AQI 41
Good
5.57μg/m³
PM2.5
24.39μg/m³
PM10
43.88ppb
O3
0.71ppb
SO2
5.39ppb
NO2
0.20ppm
CO
Air quality measurements for Ohio, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Lima, Ohio is updated on an hourly basis.
The worst air quality in Lima, Ohio was recorded at 11:00:00 on 2026-04-23.
The best air quality in Lima, Ohio was recorded at 12:00:00 on 2026-04-23.
The real-time air quality index in Lima, Ohio is 50, currently categorized as Good.
The most common pollutant in Lima, Ohio is O3.
If the air quality in Lima, Ohio is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Lima, Ohio at present are 9.042 μg/m3.
The current PM10 levels in Lima, Ohio are 41.006 μg/m3.
The current carbon monoxide (CO) level in Lima, Ohio is 0.266 ppm.
The current sulfur dioxide (SO2) levels in Lima, Ohio are 0.887 ppb.
The current ozone (O3) levels at Lima, Ohio is 53.947 ppm.
The current nitrogen dioxide (NO2) levels at Lima, Ohio is 6.979 ppb.
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