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)
49
Good
Northborough, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.12 μg/m³
0
55
155
255
425
605+
34.88 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
4.89 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Northborough, Massachusetts
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AQI 44
Good
8.03μg/m³
PM2.5
30.04μg/m³
PM10
32.56ppb
O3
0.35ppb
SO2
4.83ppb
NO2
0.20ppm
CO
AQI 38
Good
7.29μg/m³
PM2.5
28.23μg/m³
PM10
33.75ppb
O3
0.39ppb
SO2
5.91ppb
NO2
0.20ppm
CO
AQI 52
Moderate
9.61μg/m³
PM2.5
41.90μg/m³
PM10
34.14ppb
O3
0.37ppb
SO2
6.65ppb
NO2
0.17ppm
CO
AQI 52
Moderate
9.95μg/m³
PM2.5
39.28μg/m³
PM10
34.25ppb
O3
0.35ppb
SO2
5.90ppb
NO2
0.20ppm
CO
AQI 49
Good
8.70μg/m³
PM2.5
27.61μg/m³
PM10
34.23ppb
O3
0.36ppb
SO2
6.92ppb
NO2
0.15ppm
CO
AQI 49
Good
8.61μg/m³
PM2.5
37.77μg/m³
PM10
34.60ppb
O3
0.38ppb
SO2
6.91ppb
NO2
0.15ppm
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 07:00:00 on 2026-03-11.
In the last 24 hrs, the best air quality in Northborough, Massachusetts was observed at 01:00:00 on 2026-03-11.
The current air quality in Northborough, Massachusetts is 49, 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 9.102 μg/m3.
The current PM10 concentration at Northborough, Massachusetts is 39.124 μg/m3.
The current carbon monoxide (CO) concentration at Northborough, Massachusetts is 0.189 ppm.
The current sulfur dioxide (SO2) concentration at Northborough, Massachusetts is 0.351 ppb.
The current ozone (O3) concentration at Northborough, Massachusetts is 34.875 ppm.
The current nitrogen dioxide (NO2) concentration at Northborough, Massachusetts is 4.886 ppb.
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