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)
27
Good
London, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.01 μg/m³
0
55
155
255
425
605+
12.48 ppb
0
55
71
86
201
201+
1.99 ppb
0
36
76
186
605
1005+
4.26 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
London, Ohio
London, Ohio
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AQI 27
Good
4.96μg/m³
PM2.5
14.09μg/m³
PM10
16.56ppb
O3
1.82ppb
SO2
2.58ppb
NO2
0.31ppm
CO
AQI 27
Good
5.09μg/m³
PM2.5
9.86μg/m³
PM10
16.23ppb
O3
1.83ppb
SO2
3.28ppb
NO2
0.31ppm
CO
AQI 27
Good
4.80μg/m³
PM2.5
20.98μg/m³
PM10
14.69ppb
O3
2.03ppb
SO2
5.06ppb
NO2
0.33ppm
CO
AQI 27
Good
4.97μg/m³
PM2.5
18.08μg/m³
PM10
13.39ppb
O3
2.03ppb
SO2
5.56ppb
NO2
0.33ppm
CO
AQI 27
Good
5.12μg/m³
PM2.5
13.21μg/m³
PM10
17.25ppb
O3
1.82ppb
SO2
2.86ppb
NO2
0.31ppm
CO
AQI 27
Good
4.56μg/m³
PM2.5
17.32μg/m³
PM10
14.82ppb
O3
1.84ppb
SO2
1.58ppb
NO2
0.30ppm
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 2026-09-07.
In the last 24 hrs, the best air quality in London, Ohio was observed at 12:00:00 on 2026-09-07.
The current air quality in London, Ohio is 27, categorized as Good based on real-time data.
The most common pollutant in London, Ohio is PM2.5.
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 5.045 μg/m3.
The current PM10 concentration at London, Ohio is 13.011 μg/m3.
The current carbon monoxide (CO) concentration at London, Ohio is 0.324 ppm.
The current sulfur dioxide (SO2) concentration at London, Ohio is 1.989 ppb.
The current ozone (O3) concentration at London, Ohio is 12.48 ppm.
The current nitrogen dioxide (NO2) concentration at London, Ohio is 4.265 ppb.
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