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)
41
Good
Millbury, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.86 μg/m³
0
55
155
255
425
605+
43.83 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
4.01 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Millbury, Massachusetts
Millbury, Massachusetts
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AQI 41
Good
4.92μg/m³
PM2.5
14.83μg/m³
PM10
43.88ppb
O3
0.22ppb
SO2
3.67ppb
NO2
0.20ppm
CO
AQI 42
Good
5.53μg/m³
PM2.5
27.93μg/m³
PM10
44.64ppb
O3
0.28ppb
SO2
4.14ppb
NO2
0.21ppm
CO
AQI 41
Good
4.90μg/m³
PM2.5
11.09μg/m³
PM10
43.54ppb
O3
0.20ppb
SO2
4.29ppb
NO2
0.20ppm
CO
AQI 41
Good
4.74μg/m³
PM2.5
11.12μg/m³
PM10
44.16ppb
O3
0.31ppb
SO2
4.30ppb
NO2
0.22ppm
CO
AQI 41
Good
4.91μg/m³
PM2.5
12.84μg/m³
PM10
43.59ppb
O3
0.23ppb
SO2
4.00ppb
NO2
0.20ppm
CO
AQI 43
Good
4.56μg/m³
PM2.5
19.47μg/m³
PM10
46.24ppb
O3
0.22ppb
SO2
3.90ppb
NO2
0.22ppm
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 12:00:00 on 2026-06-11.
In the last 24 hrs, the best air quality in Millbury, Massachusetts was observed at 06:00:00 on 2026-06-11.
The current air quality in Millbury, Massachusetts is 41, 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 4.901 μg/m3.
The current PM10 concentration at Millbury, Massachusetts is 12.858 μg/m3.
The current carbon monoxide (CO) concentration at Millbury, Massachusetts is 0.201 ppm.
The current sulfur dioxide (SO2) concentration at Millbury, Massachusetts is 0.226 ppb.
The current ozone (O3) concentration at Millbury, Massachusetts is 43.828 ppm.
The current nitrogen dioxide (NO2) concentration at Millbury, Massachusetts is 4.015 ppb.
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