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)
78
Moderate
London, Ohio
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
14.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
108.92 μg/m³
0
55
155
255
425
605+
23.72 ppb
0
55
71
86
201
201+
3.04 ppb
0
36
76
186
605
1005+
5.30 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
London, Ohio
London, Ohio
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AQI 60
Moderate
13.51μg/m³
PM2.5
46.34μg/m³
PM10
27.51ppb
O3
2.80ppb
SO2
2.98ppb
NO2
0.21ppm
CO
AQI 58
Moderate
12.67μg/m³
PM2.5
32.45μg/m³
PM10
23.52ppb
O3
2.86ppb
SO2
3.77ppb
NO2
0.21ppm
CO
AQI 58
Moderate
13.00μg/m³
PM2.5
59.01μg/m³
PM10
22.56ppb
O3
3.21ppb
SO2
5.67ppb
NO2
0.23ppm
CO
AQI 62
Moderate
14.86μg/m³
PM2.5
76.21μg/m³
PM10
26.90ppb
O3
2.91ppb
SO2
5.68ppb
NO2
0.23ppm
CO
AQI 60
Moderate
13.85μg/m³
PM2.5
45.54μg/m³
PM10
27.24ppb
O3
2.81ppb
SO2
3.17ppb
NO2
0.21ppm
CO
AQI 58
Moderate
13.20μg/m³
PM2.5
54.22μg/m³
PM10
28.44ppb
O3
2.77ppb
SO2
2.36ppb
NO2
0.20ppm
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 03:00:00 on 2025-07-21.
In the last 24 hrs, the best air quality in London, Ohio was observed at 04:00:00 on 2025-07-20.
The current air quality in London, Ohio is 78, categorized as Moderate based on real-time data.
The most common pollutant in London, Ohio is PM10.
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 14.302 μg/m3.
The current PM10 concentration at London, Ohio is 108.921 μg/m3.
The current carbon monoxide (CO) concentration at London, Ohio is 0.222 ppm.
The current sulfur dioxide (SO2) concentration at London, Ohio is 3.04 ppb.
The current ozone (O3) concentration at London, Ohio is 23.717 ppm.
The current nitrogen dioxide (NO2) concentration at London, Ohio is 5.302 ppb.
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