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)
69
Moderate
London, Ohio
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
19.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
53.69 μg/m³
0
55
155
255
425
605+
43.20 ppb
0
55
71
86
201
201+
1.38 ppb
0
36
76
186
605
1005+
7.21 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
London, Ohio
London, Ohio
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AQI 67
Moderate
18.00μg/m³
PM2.5
56.20μg/m³
PM10
40.09ppb
O3
2.00ppb
SO2
7.53ppb
NO2
0.12ppm
CO
AQI 71
Moderate
20.07μg/m³
PM2.5
47.45μg/m³
PM10
43.31ppb
O3
2.03ppb
SO2
7.18ppb
NO2
0.13ppm
CO
AQI 67
Moderate
18.19μg/m³
PM2.5
80.89μg/m³
PM10
43.88ppb
O3
2.20ppb
SO2
6.49ppb
NO2
0.16ppm
CO
AQI 66
Moderate
17.06μg/m³
PM2.5
61.51μg/m³
PM10
42.06ppb
O3
2.19ppb
SO2
6.46ppb
NO2
0.17ppm
CO
AQI 67
Moderate
18.07μg/m³
PM2.5
51.92μg/m³
PM10
40.56ppb
O3
2.00ppb
SO2
7.46ppb
NO2
0.12ppm
CO
AQI 66
Moderate
17.03μg/m³
PM2.5
66.25μg/m³
PM10
38.24ppb
O3
1.99ppb
SO2
7.82ppb
NO2
0.10ppm
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 02:00:00 on 2025-09-02.
In the last 24 hrs, the best air quality in London, Ohio was observed at 02:00:00 on 2025-09-03.
The current air quality in London, Ohio is 49, 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 8.507 μg/m3.
The current PM10 concentration at London, Ohio is 37.056 μg/m3.
The current carbon monoxide (CO) concentration at London, Ohio is 0.283 ppm.
The current sulfur dioxide (SO2) concentration at London, Ohio is 1.348 ppb.
The current ozone (O3) concentration at London, Ohio is 19.584 ppm.
The current nitrogen dioxide (NO2) concentration at London, Ohio is 13.659 ppb.
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