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)
31
Good
Millbury, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.65 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.44 μg/m³
0
55
155
255
425
605+
33.53 ppb
0
55
71
86
201
201+
0.18 ppb
0
36
76
186
605
1005+
1.42 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Millbury, Massachusetts
Millbury, Massachusetts
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AQI 33
Good
3.82μg/m³
PM2.5
12.85μg/m³
PM10
36.19ppb
O3
0.22ppb
SO2
1.31ppb
NO2
0.13ppm
CO
AQI 26
Good
3.76μg/m³
PM2.5
11.38μg/m³
PM10
27.67ppb
O3
0.35ppb
SO2
2.71ppb
NO2
0.16ppm
CO
AQI 31
Good
3.41μg/m³
PM2.5
8.12μg/m³
PM10
33.84ppb
O3
0.10ppb
SO2
1.01ppb
NO2
0.10ppm
CO
AQI 23
Good
3.85μg/m³
PM2.5
9.72μg/m³
PM10
24.88ppb
O3
0.29ppb
SO2
3.16ppb
NO2
0.17ppm
CO
AQI 31
Good
3.60μg/m³
PM2.5
10.26μg/m³
PM10
33.44ppb
O3
0.19ppb
SO2
1.31ppb
NO2
0.12ppm
CO
AQI 22
Good
4.29μg/m³
PM2.5
18.66μg/m³
PM10
24.23ppb
O3
0.26ppb
SO2
2.87ppb
NO2
0.18ppm
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 08:00:00 on 2026-08-14.
In the last 24 hrs, the best air quality in Millbury, Massachusetts was observed at 04:00:00 on 2026-08-14.
The current air quality in Millbury, Massachusetts is 31, 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 3.648 μg/m3.
The current PM10 concentration at Millbury, Massachusetts is 10.442 μg/m3.
The current carbon monoxide (CO) concentration at Millbury, Massachusetts is 0.122 ppm.
The current sulfur dioxide (SO2) concentration at Millbury, Massachusetts is 0.181 ppb.
The current ozone (O3) concentration at Millbury, Massachusetts is 33.532 ppm.
The current nitrogen dioxide (NO2) concentration at Millbury, Massachusetts is 1.419 ppb.
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