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)
66
Moderate
London, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
16.88 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
85.09 μg/m³
0
55
155
255
425
605+
21.92 ppb
0
55
71
86
201
201+
1.92 ppb
0
36
76
186
605
1005+
8.43 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
London, Ohio
London, Ohio
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AQI 66
Moderate
16.64μg/m³
PM2.5
47.09μg/m³
PM10
16.54ppb
O3
2.66ppb
SO2
8.77ppb
NO2
0.21ppm
CO
AQI 64
Moderate
15.87μg/m³
PM2.5
26.14μg/m³
PM10
15.76ppb
O3
2.66ppb
SO2
8.52ppb
NO2
0.21ppm
CO
AQI 62
Moderate
15.00μg/m³
PM2.5
67.00μg/m³
PM10
14.85ppb
O3
2.71ppb
SO2
8.75ppb
NO2
0.24ppm
CO
AQI 71
Moderate
19.78μg/m³
PM2.5
71.65μg/m³
PM10
15.64ppb
O3
2.72ppb
SO2
8.57ppb
NO2
0.23ppm
CO
AQI 66
Moderate
16.53μg/m³
PM2.5
41.09μg/m³
PM10
16.39ppb
O3
2.66ppb
SO2
8.71ppb
NO2
0.21ppm
CO
AQI 66
Moderate
17.13μg/m³
PM2.5
66.29μg/m³
PM10
17.20ppb
O3
2.66ppb
SO2
8.94ppb
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 04:00:00 on 2025-12-07.
In the last 24 hrs, the best air quality in London, Ohio was observed at 03:00:00 on 2025-12-07.
The current air quality in London, Ohio is 66, 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 16.88 μg/m3.
The current PM10 concentration at London, Ohio is 85.087 μg/m3.
The current carbon monoxide (CO) concentration at London, Ohio is 0.214 ppm.
The current sulfur dioxide (SO2) concentration at London, Ohio is 1.915 ppb.
The current ozone (O3) concentration at London, Ohio is 21.918 ppm.
The current nitrogen dioxide (NO2) concentration at London, Ohio is 8.434 ppb.
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