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)
38
Good
Portsmouth, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.95 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.46 μg/m³
0
55
155
255
425
605+
12.43 ppb
0
55
71
86
201
201+
1.65 ppb
0
36
76
186
605
1005+
8.28 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Portsmouth, Ohio
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AQI 27
Good
4.90μg/m³
PM2.5
21.35μg/m³
PM10
6.97ppb
O3
2.46ppb
SO2
9.29ppb
NO2
0.28ppm
CO
AQI 33
Good
5.70μg/m³
PM2.5
25.84μg/m³
PM10
7.15ppb
O3
2.50ppb
SO2
9.32ppb
NO2
0.24ppm
CO
AQI 27
Good
5.40μg/m³
PM2.5
22.99μg/m³
PM10
6.76ppb
O3
2.59ppb
SO2
9.73ppb
NO2
0.23ppm
CO
AQI 44
Good
8.34μg/m³
PM2.5
36.85μg/m³
PM10
15.05ppb
O3
3.09ppb
SO2
4.12ppb
NO2
0.18ppm
CO
AQI 27
Good
4.73μg/m³
PM2.5
22.73μg/m³
PM10
25.68ppb
O3
1.35ppb
SO2
7.99ppb
NO2
0.23ppm
CO
AQI 38
Good
6.96μg/m³
PM2.5
26.48μg/m³
PM10
22.43ppb
O3
1.71ppb
SO2
15.34ppb
NO2
0.27ppm
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 03:00:00, 2026-01-22.
The best air quality in Portsmouth, Ohio was observed at 10:00:00 on 2026-01-22.
The air quality in Portsmouth, Ohio right now is Good, with an AQI of 38.
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 6.947 μg/m3.
Portsmouth, Ohio currently has a PM10 concentration of 27.456 μg/m3.
The current carbon monoxide (CO) level in Portsmouth, Ohio is 0.285 ppm.
The current sulfur dioxide (SO2) concentration in Portsmouth, Ohio is 1.654 ppb.
Portsmouth, Ohio currently has an ozone (O3) concentration of 12.434 ppm.
The current level of nitrogen dioxide (NO2) in Portsmouth, Ohio is 8.277 ppb.
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