Stay updated with real-time air quality in Marietta, 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)
62
Moderate
Marietta, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
14.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
56.65 μg/m³
0
55
155
255
425
605+
12.33 ppb
0
55
71
86
201
201+
1.52 ppb
0
36
76
186
605
1005+
6.18 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marietta, Ohio
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AQI 66
Moderate
16.74μg/m³
PM2.5
48.05μg/m³
PM10
14.46ppb
O3
1.55ppb
SO2
9.13ppb
NO2
0.26ppm
CO
AQI 67
Moderate
17.69μg/m³
PM2.5
41.03μg/m³
PM10
13.21ppb
O3
1.56ppb
SO2
10.65ppb
NO2
0.26ppm
CO
AQI 67
Moderate
17.95μg/m³
PM2.5
65.45μg/m³
PM10
11.20ppb
O3
1.52ppb
SO2
10.33ppb
NO2
0.27ppm
CO
AQI 71
Moderate
19.57μg/m³
PM2.5
63.42μg/m³
PM10
18.59ppb
O3
1.45ppb
SO2
8.91ppb
NO2
0.26ppm
CO
AQI 62
Moderate
15.10μg/m³
PM2.5
63.88μg/m³
PM10
13.50ppb
O3
1.63ppb
SO2
4.44ppb
NO2
0.24ppm
CO
AQI 49
Good
9.32μg/m³
PM2.5
42.02μg/m³
PM10
18.05ppb
O3
3.44ppb
SO2
4.04ppb
NO2
0.21ppm
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 Marietta, Ohio is updated every hour.
The worst air quality in Marietta, Ohio in the last 24 hours was observed at 02:00:00 on 2025-12-07.
In the last 24 hrs, the best air quality in Marietta, Ohio was observed at 04:00:00 on 2025-12-06.
The current air quality in Marietta, Ohio is 62, categorized as Moderate based on real-time data.
The most common pollutant in Marietta, Ohio is PM2.5.
If the air quality in Marietta, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Marietta, Ohio is 14.905 μg/m3.
The current PM10 concentration at Marietta, Ohio is 56.647 μg/m3.
The current carbon monoxide (CO) concentration at Marietta, Ohio is 0.262 ppm.
The current sulfur dioxide (SO2) concentration at Marietta, Ohio is 1.523 ppb.
The current ozone (O3) concentration at Marietta, Ohio is 12.334 ppm.
The current nitrogen dioxide (NO2) concentration at Marietta, Ohio is 6.176 ppb.
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