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)
42
Good
Millbury, 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+
10.64 μg/m³
0
55
155
255
425
605+
45.09 ppb
0
55
71
86
201
201+
0.17 ppb
0
36
76
186
605
1005+
1.60 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Millbury, Massachusetts
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AQI 42
Good
3.96μg/m³
PM2.5
11.39μg/m³
PM10
45.07ppb
O3
0.18ppb
SO2
1.69ppb
NO2
0.20ppm
CO
AQI 42
Good
4.20μg/m³
PM2.5
8.88μg/m³
PM10
44.64ppb
O3
0.29ppb
SO2
3.19ppb
NO2
0.21ppm
CO
AQI 42
Good
4.39μg/m³
PM2.5
10.03μg/m³
PM10
45.08ppb
O3
0.10ppb
SO2
1.02ppb
NO2
0.20ppm
CO
AQI 42
Good
3.93μg/m³
PM2.5
8.09μg/m³
PM10
45.05ppb
O3
0.31ppb
SO2
2.98ppb
NO2
0.22ppm
CO
AQI 42
Good
4.21μg/m³
PM2.5
10.68μg/m³
PM10
45.03ppb
O3
0.16ppb
SO2
1.51ppb
NO2
0.20ppm
CO
AQI 43
Good
4.32μg/m³
PM2.5
9.71μg/m³
PM10
46.32ppb
O3
0.25ppb
SO2
2.71ppb
NO2
0.21ppm
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 2026-03-29.
In the last 24 hrs, the best air quality in Millbury, Massachusetts was observed at 01:00:00 on 2026-03-29.
The current air quality in Millbury, Massachusetts is 42, 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 4.176 μg/m3.
The current PM10 concentration at Millbury, Massachusetts is 10.643 μg/m3.
The current carbon monoxide (CO) concentration at Millbury, Massachusetts is 0.202 ppm.
The current sulfur dioxide (SO2) concentration at Millbury, Massachusetts is 0.166 ppb.
The current ozone (O3) concentration at Millbury, Massachusetts is 45.089 ppm.
The current nitrogen dioxide (NO2) concentration at Millbury, Massachusetts is 1.601 ppb.
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