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)
35
Good
Northborough, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.51 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.00 μg/m³
0
55
155
255
425
605+
38.46 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
13.89 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Northborough, Massachusetts
Northborough, Massachusetts
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AQI 36
Good
4.45μg/m³
PM2.5
21.32μg/m³
PM10
39.11ppb
O3
0.36ppb
SO2
13.28ppb
NO2
0.20ppm
CO
AQI 35
Good
4.56μg/m³
PM2.5
11.79μg/m³
PM10
37.76ppb
O3
0.31ppb
SO2
15.29ppb
NO2
0.27ppm
CO
AQI 36
Good
4.64μg/m³
PM2.5
15.83μg/m³
PM10
38.72ppb
O3
0.39ppb
SO2
12.02ppb
NO2
0.20ppm
CO
AQI 35
Good
4.44μg/m³
PM2.5
21.31μg/m³
PM10
38.03ppb
O3
0.38ppb
SO2
12.51ppb
NO2
0.18ppm
CO
AQI 35
Good
5.01μg/m³
PM2.5
14.59μg/m³
PM10
38.42ppb
O3
0.38ppb
SO2
12.28ppb
NO2
0.21ppm
CO
AQI 36
Good
4.54μg/m³
PM2.5
15.65μg/m³
PM10
39.00ppb
O3
0.40ppb
SO2
11.36ppb
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 Northborough, Massachusetts is updated every hour.
The worst air quality in Northborough, Massachusetts in the last 24 hours was observed at 01:00:00 on 2026-05-14.
In the last 24 hrs, the best air quality in Northborough, Massachusetts was observed at 07:00:00 on 2026-05-13.
The current air quality in Northborough, Massachusetts is 35, categorized as Good based on real-time data.
The most common pollutant in Northborough, Massachusetts is O3.
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 4.515 μg/m3.
The current PM10 concentration at Northborough, Massachusetts is 15.998 μg/m3.
The current carbon monoxide (CO) concentration at Northborough, Massachusetts is 0.229 ppm.
The current sulfur dioxide (SO2) concentration at Northborough, Massachusetts is 0.351 ppb.
The current ozone (O3) concentration at Northborough, Massachusetts is 38.463 ppm.
The current nitrogen dioxide (NO2) concentration at Northborough, Massachusetts is 13.89 ppb.
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