Stay updated with real-time air quality in Westport, Massachusetts 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)
28
Good
Westport, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.19 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.45 μg/m³
0
55
155
255
425
605+
30.13 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
5.23 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Westport, Massachusetts
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AQI 28
Good
5.25μg/m³
PM2.5
22.77μg/m³
PM10
30.05ppb
O3
0.30ppb
SO2
5.20ppb
NO2
0.22ppm
CO
AQI 28
Good
5.11μg/m³
PM2.5
22.07μg/m³
PM10
30.09ppb
O3
0.29ppb
SO2
5.25ppb
NO2
0.22ppm
CO
AQI 29
Good
4.73μg/m³
PM2.5
20.68μg/m³
PM10
30.57ppb
O3
0.26ppb
SO2
5.45ppb
NO2
0.22ppm
CO
AQI 29
Good
4.90μg/m³
PM2.5
21.09μg/m³
PM10
30.56ppb
O3
0.28ppb
SO2
5.03ppb
NO2
0.21ppm
CO
AQI 30
Good
4.53μg/m³
PM2.5
16.49μg/m³
PM10
31.85ppb
O3
0.33ppb
SO2
4.79ppb
NO2
0.21ppm
CO
AQI 29
Good
4.38μg/m³
PM2.5
19.23μg/m³
PM10
30.73ppb
O3
0.24ppb
SO2
5.92ppb
NO2
0.23ppm
CO
The air quality data for Massachusetts, 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 Westport, Massachusetts are available every hour.
Westport, Massachusetts experienced its worst air quality at 01:00:00, 2026-08-14.
The best air quality in Westport, Massachusetts was observed at 04:00:00 on 2026-08-14.
The air quality in Westport, Massachusetts right now is Good, with an AQI of 28.
In Westport, Massachusetts, O3 is the most frequently found pollutant.
When air quality in Westport, Massachusetts is compromised, staying indoors and wearing a mask can reduce health risks.
Westport, Massachusetts currently has a PM2.5 concentration of 5.194 μg/m3.
Westport, Massachusetts currently has a PM10 concentration of 22.451 μg/m3.
The current carbon monoxide (CO) level in Westport, Massachusetts is 0.216 ppm.
The current sulfur dioxide (SO2) concentration in Westport, Massachusetts is 0.295 ppb.
Westport, Massachusetts currently has an ozone (O3) concentration of 30.128 ppm.
The current level of nitrogen dioxide (NO2) in Westport, Massachusetts is 5.229 ppb.
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