Stay updated with real-time air quality in Portsmouth, Rhode Island 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)
44
Good
Portsmouth, Rhode Island
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.81 μg/m³
0
55
155
255
425
605+
47.25 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
2.72 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Portsmouth, Rhode Island
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AQI 22
Good
4.34μg/m³
PM2.5
18.96μg/m³
PM10
12.58ppb
O3
0.42ppb
SO2
9.40ppb
NO2
0.41ppm
CO
AQI 22
Good
3.54μg/m³
PM2.5
11.14μg/m³
PM10
14.01ppb
O3
0.48ppb
SO2
10.14ppb
NO2
0.42ppm
CO
AQI 27
Good
5.38μg/m³
PM2.5
23.60μg/m³
PM10
12.89ppb
O3
0.47ppb
SO2
10.04ppb
NO2
0.41ppm
CO
AQI 16
Good
3.03μg/m³
PM2.5
11.67μg/m³
PM10
13.81ppb
O3
0.49ppb
SO2
10.71ppb
NO2
0.42ppm
CO
AQI 22
Good
4.34μg/m³
PM2.5
19.11μg/m³
PM10
12.08ppb
O3
0.41ppb
SO2
9.21ppb
NO2
0.41ppm
CO
AQI 22
Good
4.38μg/m³
PM2.5
19.19μg/m³
PM10
12.21ppb
O3
0.41ppb
SO2
9.29ppb
NO2
0.41ppm
CO
Air quality data and pollutant measurements for Rhode Island, 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 Portsmouth, Rhode Island is updated every hour.
The worst air quality in Portsmouth, Rhode Island in the last 24 hours was observed at 12:00:00 on 2025-09-11.
In the last 24 hrs, the best air quality in Portsmouth, Rhode Island was observed at 01:00:00 on 2025-09-11.
The current air quality in Portsmouth, Rhode Island is 22, categorized as Good based on real-time data.
The most common pollutant in Portsmouth, Rhode Island is PM2.5.
If the air quality in Portsmouth, Rhode Island is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Portsmouth, Rhode Island is 4.341 μg/m3.
The current PM10 concentration at Portsmouth, Rhode Island is 19.02 μg/m3.
The current carbon monoxide (CO) concentration at Portsmouth, Rhode Island is 0.262 ppm.
The current sulfur dioxide (SO2) concentration at Portsmouth, Rhode Island is 0.384 ppb.
The current ozone (O3) concentration at Portsmouth, Rhode Island is 16.881 ppm.
The current nitrogen dioxide (NO2) concentration at Portsmouth, Rhode Island is 7.195 ppb.
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