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)
52
Moderate
Lima, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.96 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
44.71 μg/m³
0
55
155
255
425
605+
37.99 ppb
0
55
71
86
201
201+
1.86 ppb
0
36
76
186
605
1005+
3.46 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Lima, Ohio
Lima, Ohio
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AQI 54
Moderate
11.48μg/m³
PM2.5
51.29μg/m³
PM10
37.27ppb
O3
0.37ppb
SO2
3.96ppb
NO2
0.15ppm
CO
AQI 54
Moderate
10.71μg/m³
PM2.5
47.26μg/m³
PM10
32.87ppb
O3
0.28ppb
SO2
4.57ppb
NO2
0.15ppm
CO
AQI 58
Moderate
12.63μg/m³
PM2.5
57.37μg/m³
PM10
32.48ppb
O3
0.42ppb
SO2
3.54ppb
NO2
0.14ppm
CO
AQI 52
Moderate
9.82μg/m³
PM2.5
43.27μg/m³
PM10
36.38ppb
O3
0.28ppb
SO2
4.71ppb
NO2
0.16ppm
CO
AQI 52
Moderate
9.94μg/m³
PM2.5
44.02μg/m³
PM10
32.92ppb
O3
0.31ppb
SO2
4.36ppb
NO2
0.15ppm
CO
AQI 56
Moderate
11.69μg/m³
PM2.5
51.31μg/m³
PM10
37.12ppb
O3
0.57ppb
SO2
3.30ppb
NO2
0.14ppm
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 2026-06-07.
The best air quality in Lima, Ohio was recorded at 02:00:00 on 2026-06-08.
The real-time air quality index in Lima, Ohio is 67, currently categorized as Moderate.
The most common pollutant in Lima, Ohio is PM2.5.
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 18.178 μg/m3.
The current PM10 levels in Lima, Ohio are 80.958 μg/m3.
The current carbon monoxide (CO) level in Lima, Ohio is 0.145 ppm.
The current sulfur dioxide (SO2) levels in Lima, Ohio are 0.328 ppb.
The current ozone (O3) levels at Lima, Ohio is 40.549 ppm.
The current nitrogen dioxide (NO2) levels at Lima, Ohio is 3.799 ppb.
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