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)
28
Good
Northborough, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.60 μg/m³
0
55
155
255
425
605+
30.45 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
4.40 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Northborough, Massachusetts
Northborough, Massachusetts
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AQI 22
Good
3.60μg/m³
PM2.5
10.55μg/m³
PM10
12.46ppb
O3
0.18ppb
SO2
12.24ppb
NO2
0.22ppm
CO
AQI 18
Good
1.90μg/m³
PM2.5
4.00μg/m³
PM10
18.96ppb
O3
0.15ppb
SO2
13.59ppb
NO2
0.21ppm
CO
AQI 17
Good
2.91μg/m³
PM2.5
9.82μg/m³
PM10
17.69ppb
O3
0.17ppb
SO2
11.66ppb
NO2
0.18ppm
CO
AQI 16
Good
3.17μg/m³
PM2.5
10.78μg/m³
PM10
12.52ppb
O3
0.18ppb
SO2
11.72ppb
NO2
0.21ppm
CO
AQI 17
Good
3.29μg/m³
PM2.5
18.02μg/m³
PM10
16.91ppb
O3
0.31ppb
SO2
11.24ppb
NO2
0.18ppm
CO
AQI 17
Good
2.73μg/m³
PM2.5
5.93μg/m³
PM10
17.76ppb
O3
0.32ppb
SO2
11.41ppb
NO2
0.19ppm
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 2025-11-01.
In the last 24 hrs, the best air quality in Northborough, Massachusetts was observed at 10:00:00 on 2025-11-02.
The current air quality in Northborough, Massachusetts is 19, 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 2.465 μg/m3.
The current PM10 concentration at Northborough, Massachusetts is 8.82 μg/m3.
The current carbon monoxide (CO) concentration at Northborough, Massachusetts is 0.248 ppm.
The current sulfur dioxide (SO2) concentration at Northborough, Massachusetts is 0.214 ppb.
The current ozone (O3) concentration at Northborough, Massachusetts is 19.592 ppm.
The current nitrogen dioxide (NO2) concentration at Northborough, Massachusetts is 10.325 ppb.
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