Stay updated with real-time air quality in Millbury, 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)
37
Good
Millbury, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.45 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.07 μg/m³
0
55
155
255
425
605+
40.48 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
13.05 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Millbury, Massachusetts
Millbury, Massachusetts
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AQI 36
Good
4.35μg/m³
PM2.5
11.30μg/m³
PM10
38.79ppb
O3
0.29ppb
SO2
14.70ppb
NO2
0.27ppm
CO
AQI 34
Good
3.71μg/m³
PM2.5
13.67μg/m³
PM10
36.99ppb
O3
0.35ppb
SO2
15.85ppb
NO2
0.25ppm
CO
AQI 36
Good
4.69μg/m³
PM2.5
11.01μg/m³
PM10
38.62ppb
O3
0.30ppb
SO2
18.90ppb
NO2
0.30ppm
CO
AQI 36
Good
3.78μg/m³
PM2.5
8.78μg/m³
PM10
38.99ppb
O3
0.34ppb
SO2
13.03ppb
NO2
0.23ppm
CO
AQI 36
Good
4.44μg/m³
PM2.5
11.10μg/m³
PM10
38.53ppb
O3
0.31ppb
SO2
16.64ppb
NO2
0.28ppm
CO
AQI 36
Good
4.35μg/m³
PM2.5
12.09μg/m³
PM10
39.08ppb
O3
0.27ppb
SO2
8.15ppb
NO2
0.24ppm
CO
Air quality data and pollutant measurements for Massachusetts, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Millbury, Massachusetts is updated every hour.
The worst air quality in Millbury, Massachusetts in the last 24 hours was observed at 02:00:00 on 2026-05-14.
In the last 24 hrs, the best air quality in Millbury, Massachusetts was observed at 05:00:00 on 2026-05-13.
The current air quality in Millbury, Massachusetts is 37, categorized as Good based on real-time data.
The most common pollutant in Millbury, Massachusetts is O3.
If the air quality in Millbury, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Millbury, Massachusetts is 4.45 μg/m3.
The current PM10 concentration at Millbury, Massachusetts is 12.067 μg/m3.
The current carbon monoxide (CO) concentration at Millbury, Massachusetts is 0.191 ppm.
The current sulfur dioxide (SO2) concentration at Millbury, Massachusetts is 0.309 ppb.
The current ozone (O3) concentration at Millbury, Massachusetts is 40.482 ppm.
The current nitrogen dioxide (NO2) concentration at Millbury, Massachusetts is 13.049 ppb.
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