Stay updated with real-time air quality in Salem, 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)
39
Good
Salem, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.96 μg/m³
0
55
155
255
425
605+
42.02 ppb
0
55
71
86
201
201+
1.15 ppb
0
36
76
186
605
1005+
4.26 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Salem, Ohio
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AQI 40
Good
5.66μg/m³
PM2.5
25.17μg/m³
PM10
42.98ppb
O3
1.19ppb
SO2
5.74ppb
NO2
0.22ppm
CO
AQI 38
Good
6.72μg/m³
PM2.5
24.84μg/m³
PM10
40.47ppb
O3
1.10ppb
SO2
5.16ppb
NO2
0.22ppm
CO
AQI 44
Good
8.07μg/m³
PM2.5
26.97μg/m³
PM10
31.16ppb
O3
1.77ppb
SO2
5.18ppb
NO2
0.22ppm
CO
AQI 38
Good
6.69μg/m³
PM2.5
25.25μg/m³
PM10
39.37ppb
O3
1.41ppb
SO2
5.02ppb
NO2
0.22ppm
CO
AQI 38
Good
6.51μg/m³
PM2.5
25.01μg/m³
PM10
39.50ppb
O3
1.13ppb
SO2
4.99ppb
NO2
0.22ppm
CO
AQI 41
Good
6.22μg/m³
PM2.5
27.59μg/m³
PM10
43.75ppb
O3
1.21ppb
SO2
6.15ppb
NO2
0.22ppm
CO
Air quality measurements for Ohio, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Salem, Ohio is updated on an hourly basis.
The worst air quality in Salem, Ohio was recorded at 02:00:00 on 2026-10-22.
The best air quality in Salem, Ohio was recorded at 02:00:00 on 2026-10-22.
The real-time air quality index in Salem, Ohio is 39, currently categorized as Good.
The most common pollutant in Salem, Ohio is O3.
If the air quality in Salem, Ohio is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Salem, Ohio at present are 6.241 μg/m3.
The current PM10 levels in Salem, Ohio are 21.957 μg/m3.
The current carbon monoxide (CO) level in Salem, Ohio is 0.244 ppm.
The current sulfur dioxide (SO2) levels in Salem, Ohio are 1.151 ppb.
The current ozone (O3) levels at Salem, Ohio is 42.02 ppm.
The current nitrogen dioxide (NO2) levels at Salem, Ohio is 4.265 ppb.
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