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

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.36 μg/m³
0
55
155
255
425
605+
21.42 ppb
0
55
71
86
201
201+
1.25 ppb
0
36
76
186
605
1005+
12.07 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Portsmouth, Ohio
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AQI 33
Good
5.56μg/m³
PM2.5
23.56μg/m³
PM10
15.28ppb
O3
1.22ppb
SO2
9.68ppb
NO2
0.14ppm
CO
AQI 27
Good
5.05μg/m³
PM2.5
21.59μg/m³
PM10
17.46ppb
O3
1.21ppb
SO2
9.43ppb
NO2
0.17ppm
CO
AQI 33
Good
6.18μg/m³
PM2.5
34.58μg/m³
PM10
24.86ppb
O3
1.23ppb
SO2
9.12ppb
NO2
0.17ppm
CO
AQI 44
Good
7.93μg/m³
PM2.5
33.01μg/m³
PM10
28.38ppb
O3
1.29ppb
SO2
11.16ppb
NO2
0.16ppm
CO
AQI 49
Good
9.49μg/m³
PM2.5
22.20μg/m³
PM10
26.36ppb
O3
1.34ppb
SO2
10.23ppb
NO2
0.17ppm
CO
AQI 54
Moderate
11.35μg/m³
PM2.5
27.24μg/m³
PM10
25.04ppb
O3
1.50ppb
SO2
12.19ppb
NO2
0.15ppm
CO
The air quality data for Ohio, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Portsmouth, Ohio are available every hour.
Portsmouth, Ohio experienced its worst air quality at 05:00:00, 2026-08-11.
The best air quality in Portsmouth, Ohio was observed at 02:00:00 on 2026-08-12.
The air quality in Portsmouth, Ohio right now is Good, with an AQI of 33.
In Portsmouth, Ohio, PM2.5 is the most frequently found pollutant.
When air quality in Portsmouth, Ohio is compromised, staying indoors and wearing a mask can reduce health risks.
Portsmouth, Ohio currently has a PM2.5 concentration of 6.139 μg/m3.
Portsmouth, Ohio currently has a PM10 concentration of 15.358 μg/m3.
The current carbon monoxide (CO) level in Portsmouth, Ohio is 0.145 ppm.
The current sulfur dioxide (SO2) concentration in Portsmouth, Ohio is 1.255 ppb.
Portsmouth, Ohio currently has an ozone (O3) concentration of 21.418 ppm.
The current level of nitrogen dioxide (NO2) in Portsmouth, Ohio is 12.074 ppb.
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