Stay updated with real-time air quality in Weymouth Town, 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)
27
Good
Weymouth Town, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.71 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.57 μg/m³
0
55
155
255
425
605+
28.98 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
5.14 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Weymouth Town, Massachusetts
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AQI 28
Good
4.11μg/m³
PM2.5
17.80μg/m³
PM10
29.53ppb
O3
0.26ppb
SO2
5.91ppb
NO2
0.16ppm
CO
AQI 28
Good
3.93μg/m³
PM2.5
17.13μg/m³
PM10
29.54ppb
O3
0.26ppb
SO2
5.26ppb
NO2
0.16ppm
CO
AQI 27
Good
4.25μg/m³
PM2.5
18.30μg/m³
PM10
29.36ppb
O3
0.25ppb
SO2
5.71ppb
NO2
0.16ppm
CO
AQI 28
Good
4.36μg/m³
PM2.5
18.15μg/m³
PM10
29.96ppb
O3
0.28ppb
SO2
5.85ppb
NO2
0.17ppm
CO
AQI 27
Good
3.83μg/m³
PM2.5
16.53μg/m³
PM10
29.18ppb
O3
0.26ppb
SO2
5.43ppb
NO2
0.16ppm
CO
AQI 27
Good
3.77μg/m³
PM2.5
16.24μg/m³
PM10
29.33ppb
O3
0.27ppb
SO2
5.20ppb
NO2
0.16ppm
CO
Air quality and pollutant data for Massachusetts, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Weymouth Town, Massachusetts is updated every hour for accuracy.
In the past 24 hours, the air quality in Weymouth Town, Massachusetts was at its worst at 04:00:00 on 2026-02-11.
In the last 24 hours, the best air quality in Weymouth Town, Massachusetts was observed at 03:00:00 on 2026-02-12.
As of now, the AQI in Weymouth Town, Massachusetts is 27, indicating Good conditions.
Weymouth Town, Massachusetts air has the highest levels of O3.
Poor air quality in Weymouth Town, Massachusetts means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Weymouth Town, Massachusetts are currently 3.708 μg/m3.
The PM10 concentration in Weymouth Town, Massachusetts is 16.57 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Weymouth Town, Massachusetts is 0.161 ppm.
Currently, Weymouth Town, Massachusetts has a sulfur dioxide (SO2) concentration of 0.277 ppb.
The current ozone (O3) level in Weymouth Town, Massachusetts at the moment is 28.976 ppm.
Nitrogen dioxide (NO2) level in Weymouth Town, Massachusetts at the moment is 5.141 ppb.
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