Stay updated with real-time air quality in Johnston, 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)
21
Good
Johnston, Rhode Island
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.44 μg/m³
0
55
155
255
425
605+
23.08 ppb
0
55
71
86
201
201+
0.32 ppb
0
36
76
186
605
1005+
2.54 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Johnston, Rhode Island
Scroll To Air Quality MapLoading...
AQI 22
Good
2.39μg/m³
PM2.5
13.52μg/m³
PM10
23.79ppb
O3
0.31ppb
SO2
2.42ppb
NO2
0.15ppm
CO
AQI 19
Good
2.28μg/m³
PM2.5
13.81μg/m³
PM10
20.60ppb
O3
0.34ppb
SO2
2.83ppb
NO2
0.11ppm
CO
AQI 21
Good
2.11μg/m³
PM2.5
11.93μg/m³
PM10
22.98ppb
O3
0.32ppb
SO2
2.28ppb
NO2
0.15ppm
CO
AQI 17
Good
2.63μg/m³
PM2.5
9.97μg/m³
PM10
18.49ppb
O3
0.41ppb
SO2
2.98ppb
NO2
0.17ppm
CO
AQI 20
Good
2.18μg/m³
PM2.5
9.97μg/m³
PM10
21.79ppb
O3
0.40ppb
SO2
5.51ppb
NO2
0.16ppm
CO
AQI 25
Good
2.56μg/m³
PM2.5
15.26μg/m³
PM10
27.16ppb
O3
0.26ppb
SO2
2.10ppb
NO2
0.18ppm
CO
The air quality data for Rhode Island, 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 Johnston, Rhode Island are available every hour.
Johnston, Rhode Island experienced its worst air quality at 05:00:00, 2026-11-12.
The best air quality in Johnston, Rhode Island was observed at 11:00:00 on 2026-11-12.
The air quality in Johnston, Rhode Island right now is Good, with an AQI of 21.
In Johnston, Rhode Island, O3 is the most frequently found pollutant.
When air quality in Johnston, Rhode Island is compromised, staying indoors and wearing a mask can reduce health risks.
Johnston, Rhode Island currently has a PM2.5 concentration of 2.44 μg/m3.
Johnston, Rhode Island currently has a PM10 concentration of 13.435 μg/m3.
The current carbon monoxide (CO) level in Johnston, Rhode Island is 0.146 ppm.
The current sulfur dioxide (SO2) concentration in Johnston, Rhode Island is 0.316 ppb.
Johnston, Rhode Island currently has an ozone (O3) concentration of 23.076 ppm.
The current level of nitrogen dioxide (NO2) in Johnston, Rhode Island is 2.54 ppb.
All Rights Reserved © Ambee Inc. 2025