Stay updated with real-time air quality in London, 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)
37
Good
London, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.49 μg/m³
0
55
155
255
425
605+
39.52 ppb
0
55
71
86
201
201+
1.50 ppb
0
36
76
186
605
1005+
7.46 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
London, Ohio
Scroll To Air Quality MapLoading...
AQI 36
Good
4.47μg/m³
PM2.5
18.24μg/m³
PM10
39.35ppb
O3
5.24ppb
SO2
10.73ppb
NO2
0.28ppm
CO
AQI 36
Good
4.95μg/m³
PM2.5
20.71μg/m³
PM10
39.46ppb
O3
5.24ppb
SO2
9.86ppb
NO2
0.26ppm
CO
AQI 39
Good
4.40μg/m³
PM2.5
18.99μg/m³
PM10
42.49ppb
O3
1.19ppb
SO2
6.17ppb
NO2
0.19ppm
CO
AQI 39
Good
4.40μg/m³
PM2.5
17.98μg/m³
PM10
42.05ppb
O3
1.19ppb
SO2
6.15ppb
NO2
0.19ppm
CO
AQI 36
Good
4.49μg/m³
PM2.5
18.34μg/m³
PM10
39.21ppb
O3
5.27ppb
SO2
10.55ppb
NO2
0.27ppm
CO
AQI 37
Good
4.42μg/m³
PM2.5
18.64μg/m³
PM10
39.60ppb
O3
5.06ppb
SO2
11.52ppb
NO2
0.29ppm
CO
Air quality data and pollutant measurements for Ohio, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for London, Ohio is updated every hour.
The worst air quality in London, Ohio in the last 24 hours was observed at 05:00:00 on 2026-03-09.
In the last 24 hrs, the best air quality in London, Ohio was observed at 09:00:00 on 2026-03-09.
The current air quality in London, Ohio is 37, categorized as Good based on real-time data.
The most common pollutant in London, Ohio is O3.
If the air quality in London, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at London, Ohio is 4.437 μg/m3.
The current PM10 concentration at London, Ohio is 18.486 μg/m3.
The current carbon monoxide (CO) concentration at London, Ohio is 0.217 ppm.
The current sulfur dioxide (SO2) concentration at London, Ohio is 1.496 ppb.
The current ozone (O3) concentration at London, Ohio is 39.519 ppm.
The current nitrogen dioxide (NO2) concentration at London, Ohio is 7.462 ppb.
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