Stay updated with real-time air quality in Grafton, 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)
66
Moderate
Grafton, Massachusetts
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
17.23 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
68.27 μg/m³
0
55
155
255
425
605+
26.19 ppb
0
55
71
86
201
201+
0.17 ppb
0
36
76
186
605
1005+
6.58 ppb
0
54
101
361
1250
2050+
0.36 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Grafton, Massachusetts
Grafton, Massachusetts
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AQI 33
Good
4.90μg/m³
PM2.5
11.16μg/m³
PM10
36.22ppb
O3
0.13ppb
SO2
5.80ppb
NO2
0.30ppm
CO
AQI 38
Good
6.87μg/m³
PM2.5
14.19μg/m³
PM10
18.51ppb
O3
0.22ppb
SO2
7.21ppb
NO2
0.31ppm
CO
AQI 35
Good
5.51μg/m³
PM2.5
13.77μg/m³
PM10
38.44ppb
O3
0.21ppb
SO2
6.71ppb
NO2
0.29ppm
CO
AQI 34
Good
4.83μg/m³
PM2.5
11.21μg/m³
PM10
36.88ppb
O3
0.13ppb
SO2
5.82ppb
NO2
0.30ppm
CO
AQI 37
Good
4.50μg/m³
PM2.5
10.02μg/m³
PM10
40.23ppb
O3
0.10ppb
SO2
5.98ppb
NO2
0.30ppm
CO
AQI 34
Good
4.70μg/m³
PM2.5
10.77μg/m³
PM10
36.80ppb
O3
0.13ppb
SO2
5.22ppb
NO2
0.30ppm
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 Grafton, Massachusetts is updated every hour for accuracy.
In the past 24 hours, the air quality in Grafton, Massachusetts was at its worst at 04:00:00 on 2025-07-25.
In the last 24 hours, the best air quality in Grafton, Massachusetts was observed at 12:00:00 on 2025-07-26.
As of now, the AQI in Grafton, Massachusetts is 37, indicating Good conditions.
Grafton, Massachusetts air has the highest levels of O3.
Poor air quality in Grafton, Massachusetts means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Grafton, Massachusetts are currently 5.091 μg/m3.
The PM10 concentration in Grafton, Massachusetts is 10.356 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Grafton, Massachusetts is 0.299 ppm.
Currently, Grafton, Massachusetts has a sulfur dioxide (SO2) concentration of 0.192 ppb.
The current ozone (O3) level in Grafton, Massachusetts at the moment is 39.994 ppm.
Nitrogen dioxide (NO2) level in Grafton, Massachusetts at the moment is 6.662 ppb.
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