Stay updated with real-time air quality in Northborough, 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)
27
Good
Northborough, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.02 μg/m³
0
55
155
255
425
605+
21.55 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
5.15 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Northborough, Massachusetts
Northborough, Massachusetts
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AQI 27
Good
4.59μg/m³
PM2.5
23.03μg/m³
PM10
20.27ppb
O3
0.40ppb
SO2
5.15ppb
NO2
0.21ppm
CO
AQI 27
Good
5.07μg/m³
PM2.5
11.69μg/m³
PM10
19.34ppb
O3
0.18ppb
SO2
5.54ppb
NO2
0.27ppm
CO
AQI 27
Good
4.63μg/m³
PM2.5
18.89μg/m³
PM10
21.55ppb
O3
0.48ppb
SO2
5.13ppb
NO2
0.20ppm
CO
AQI 27
Good
4.69μg/m³
PM2.5
16.26μg/m³
PM10
21.86ppb
O3
0.46ppb
SO2
5.09ppb
NO2
0.20ppm
CO
AQI 23
Good
4.41μg/m³
PM2.5
16.21μg/m³
PM10
24.64ppb
O3
0.44ppb
SO2
5.42ppb
NO2
0.19ppm
CO
AQI 23
Good
3.93μg/m³
PM2.5
12.77μg/m³
PM10
24.86ppb
O3
0.38ppb
SO2
5.18ppb
NO2
0.20ppm
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 Northborough, Massachusetts is updated every hour.
The worst air quality in Northborough, Massachusetts in the last 24 hours was observed at 06:00:00 on 2026-11-12.
In the last 24 hrs, the best air quality in Northborough, Massachusetts was observed at 07:00:00 on 2026-11-12.
The current air quality in Northborough, Massachusetts is 27, categorized as Good based on real-time data.
The most common pollutant in Northborough, Massachusetts is PM2.5.
If the air quality in Northborough, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Northborough, Massachusetts is 4.839 μg/m3.
The current PM10 concentration at Northborough, Massachusetts is 14.016 μg/m3.
The current carbon monoxide (CO) concentration at Northborough, Massachusetts is 0.218 ppm.
The current sulfur dioxide (SO2) concentration at Northborough, Massachusetts is 0.351 ppb.
The current ozone (O3) concentration at Northborough, Massachusetts is 21.553 ppm.
The current nitrogen dioxide (NO2) concentration at Northborough, Massachusetts is 5.15 ppb.
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