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)
81
Moderate
Portsmouth, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
24.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
46.23 μg/m³
0
55
155
255
425
605+
5.85 ppb
0
55
71
86
201
201+
1.89 ppb
0
36
76
186
605
1005+
8.05 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 77
Moderate
22.57μg/m³
PM2.5
93.22μg/m³
PM10
6.18ppb
O3
1.60ppb
SO2
9.23ppb
NO2
0.10ppm
CO
AQI 60
Moderate
14.47μg/m³
PM2.5
63.09μg/m³
PM10
3.77ppb
O3
1.60ppb
SO2
9.21ppb
NO2
0.12ppm
CO
AQI 58
Moderate
13.48μg/m³
PM2.5
61.12μg/m³
PM10
3.58ppb
O3
1.62ppb
SO2
8.84ppb
NO2
0.13ppm
CO
AQI 52
Moderate
10.31μg/m³
PM2.5
37.32μg/m³
PM10
27.91ppb
O3
1.48ppb
SO2
8.05ppb
NO2
0.11ppm
CO
AQI 54
Moderate
10.61μg/m³
PM2.5
24.02μg/m³
PM10
24.37ppb
O3
1.70ppb
SO2
8.75ppb
NO2
0.11ppm
CO
AQI 52
Moderate
10.14μg/m³
PM2.5
29.41μg/m³
PM10
27.03ppb
O3
1.70ppb
SO2
9.57ppb
NO2
0.10ppm
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 08:00:00, 2026-03-07.
The best air quality in Portsmouth, Ohio was observed at 01:00:00 on 2026-03-06.
The air quality in Portsmouth, Ohio right now is Moderate, with an AQI of 86.
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 27.939 μg/m3.
Portsmouth, Ohio currently has a PM10 concentration of 69.912 μg/m3.
The current carbon monoxide (CO) level in Portsmouth, Ohio is 0.101 ppm.
The current sulfur dioxide (SO2) concentration in Portsmouth, Ohio is 1.59 ppb.
Portsmouth, Ohio currently has an ozone (O3) concentration of 10.765 ppm.
The current level of nitrogen dioxide (NO2) in Portsmouth, Ohio is 9.312 ppb.
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