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)
43
Good
Weymouth Town, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.86 μg/m³
0
55
155
255
425
605+
45.68 ppb
0
55
71
86
201
201+
0.49 ppb
0
36
76
186
605
1005+
1.28 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Weymouth Town, Massachusetts
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AQI 42
Good
4.05μg/m³
PM2.5
17.37μg/m³
PM10
45.12ppb
O3
0.52ppb
SO2
2.20ppb
NO2
0.21ppm
CO
AQI 42
Good
4.08μg/m³
PM2.5
17.65μg/m³
PM10
45.21ppb
O3
0.50ppb
SO2
1.66ppb
NO2
0.21ppm
CO
AQI 42
Good
4.08μg/m³
PM2.5
17.43μg/m³
PM10
45.04ppb
O3
0.52ppb
SO2
2.06ppb
NO2
0.21ppm
CO
AQI 42
Good
4.15μg/m³
PM2.5
16.89μg/m³
PM10
44.77ppb
O3
0.54ppb
SO2
2.69ppb
NO2
0.22ppm
CO
AQI 42
Good
4.24μg/m³
PM2.5
18.18μg/m³
PM10
44.53ppb
O3
0.49ppb
SO2
2.17ppb
NO2
0.21ppm
CO
AQI 41
Good
4.28μg/m³
PM2.5
18.33μg/m³
PM10
44.35ppb
O3
0.48ppb
SO2
2.19ppb
NO2
0.21ppm
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 10:00:00 on 2026-03-29.
In the last 24 hours, the best air quality in Weymouth Town, Massachusetts was observed at 03:00:00 on 2026-03-29.
As of now, the AQI in Weymouth Town, Massachusetts is 43, 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 4.034 μg/m3.
The PM10 concentration in Weymouth Town, Massachusetts is 17.859 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Weymouth Town, Massachusetts is 0.208 ppm.
Currently, Weymouth Town, Massachusetts has a sulfur dioxide (SO2) concentration of 0.495 ppb.
The current ozone (O3) level in Weymouth Town, Massachusetts at the moment is 45.679 ppm.
Nitrogen dioxide (NO2) level in Weymouth Town, Massachusetts at the moment is 1.284 ppb.
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