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)
49
Good
Portsmouth, Ohio
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.41 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.80 μg/m³
0
55
155
255
425
605+
29.57 ppb
0
55
71
86
201
201+
5.06 ppb
0
36
76
186
605
1005+
6.18 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Portsmouth, Ohio
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AQI 38
Good
7.05μg/m³
PM2.5
30.24μg/m³
PM10
15.13ppb
O3
1.68ppb
SO2
7.28ppb
NO2
0.18ppm
CO
AQI 27
Good
5.27μg/m³
PM2.5
22.91μg/m³
PM10
14.22ppb
O3
1.69ppb
SO2
7.29ppb
NO2
0.18ppm
CO
AQI 33
Good
5.60μg/m³
PM2.5
23.99μg/m³
PM10
11.02ppb
O3
1.68ppb
SO2
7.33ppb
NO2
0.18ppm
CO
AQI 38
Good
7.50μg/m³
PM2.5
21.48μg/m³
PM10
24.78ppb
O3
1.59ppb
SO2
6.43ppb
NO2
0.18ppm
CO
AQI 38
Good
6.71μg/m³
PM2.5
21.35μg/m³
PM10
18.85ppb
O3
1.34ppb
SO2
6.76ppb
NO2
0.19ppm
CO
AQI 33
Good
6.31μg/m³
PM2.5
18.09μg/m³
PM10
24.52ppb
O3
1.36ppb
SO2
6.90ppb
NO2
0.18ppm
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 11:00:00, 2025-09-01.
The best air quality in Portsmouth, Ohio was observed at 08:00:00 on 2025-09-02.
The air quality in Portsmouth, Ohio right now is Good, with an AQI of 22.
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 4.227 μg/m3.
Portsmouth, Ohio currently has a PM10 concentration of 9.226 μg/m3.
The current carbon monoxide (CO) level in Portsmouth, Ohio is 0.177 ppm.
The current sulfur dioxide (SO2) concentration in Portsmouth, Ohio is 1.633 ppb.
Portsmouth, Ohio currently has an ozone (O3) concentration of 12.584 ppm.
The current level of nitrogen dioxide (NO2) in Portsmouth, Ohio is 10.288 ppb.
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