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)
29
Good
Weymouth Town, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.69 μg/m³
0
55
155
255
425
605+
31.49 ppb
0
55
71
86
201
201+
0.54 ppb
0
36
76
186
605
1005+
3.04 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Weymouth Town, Massachusetts
Weymouth Town, Massachusetts
Scroll To Air Quality MapLoading...
AQI 28
Good
4.21μg/m³
PM2.5
18.58μg/m³
PM10
30.14ppb
O3
0.53ppb
SO2
3.35ppb
NO2
0.20ppm
CO
AQI 29
Good
4.16μg/m³
PM2.5
18.20μg/m³
PM10
30.69ppb
O3
0.51ppb
SO2
3.05ppb
NO2
0.20ppm
CO
AQI 28
Good
4.21μg/m³
PM2.5
18.35μg/m³
PM10
30.11ppb
O3
0.49ppb
SO2
3.31ppb
NO2
0.20ppm
CO
AQI 28
Good
4.21μg/m³
PM2.5
17.86μg/m³
PM10
29.57ppb
O3
0.58ppb
SO2
3.45ppb
NO2
0.21ppm
CO
AQI 29
Good
4.22μg/m³
PM2.5
18.11μg/m³
PM10
30.56ppb
O3
0.46ppb
SO2
2.96ppb
NO2
0.20ppm
CO
AQI 28
Good
4.23μg/m³
PM2.5
17.95μg/m³
PM10
30.38ppb
O3
0.46ppb
SO2
2.78ppb
NO2
0.20ppm
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 11:00:00 on 2026-08-13.
In the last 24 hours, the best air quality in Weymouth Town, Massachusetts was observed at 04:00:00 on 2026-08-14.
As of now, the AQI in Weymouth Town, Massachusetts is 29, 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 4.185 μg/m3.
The PM10 concentration in Weymouth Town, Massachusetts is 18.693 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Weymouth Town, Massachusetts is 0.201 ppm.
Currently, Weymouth Town, Massachusetts has a sulfur dioxide (SO2) concentration of 0.544 ppb.
The current ozone (O3) level in Weymouth Town, Massachusetts at the moment is 31.491 ppm.
Nitrogen dioxide (NO2) level in Weymouth Town, Massachusetts at the moment is 3.04 ppb.
All Rights Reserved © Ambee Inc. 2025