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)
33
Good
Marietta, Ohio
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.76 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.32 μg/m³
0
55
155
255
425
605+
16.00 ppb
0
55
71
86
201
201+
1.90 ppb
0
36
76
186
605
1005+
10.03 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marietta, Ohio
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AQI 33
Good
5.62μg/m³
PM2.5
19.66μg/m³
PM10
14.00ppb
O3
1.90ppb
SO2
11.68ppb
NO2
0.18ppm
CO
AQI 33
Good
5.53μg/m³
PM2.5
19.42μg/m³
PM10
14.22ppb
O3
1.90ppb
SO2
11.39ppb
NO2
0.18ppm
CO
AQI 27
Good
4.77μg/m³
PM2.5
23.91μg/m³
PM10
17.99ppb
O3
2.02ppb
SO2
11.99ppb
NO2
0.25ppm
CO
AQI 22
Good
3.77μg/m³
PM2.5
14.70μg/m³
PM10
19.67ppb
O3
1.71ppb
SO2
10.90ppb
NO2
0.22ppm
CO
AQI 33
Good
5.97μg/m³
PM2.5
18.19μg/m³
PM10
5.02ppb
O3
2.23ppb
SO2
6.94ppb
NO2
0.18ppm
CO
AQI 19
Good
3.04μg/m³
PM2.5
13.63μg/m³
PM10
21.40ppb
O3
1.21ppb
SO2
8.55ppb
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 01:00:00 on 2025-10-21.
In the last 24 hrs, the best air quality in Marietta, Ohio was observed at 09:00:00 on 2025-10-21.
The current air quality in Marietta, Ohio is 33, categorized as Good 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 5.762 μg/m3.
The current PM10 concentration at Marietta, Ohio is 18.32 μg/m3.
The current carbon monoxide (CO) concentration at Marietta, Ohio is 0.175 ppm.
The current sulfur dioxide (SO2) concentration at Marietta, Ohio is 1.897 ppb.
The current ozone (O3) concentration at Marietta, Ohio is 15.996 ppm.
The current nitrogen dioxide (NO2) concentration at Marietta, Ohio is 10.027 ppb.
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