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)
18
Good
Northborough, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
3.11 μg/m³
0
55
155
255
425
605+
19.12 ppb
0
55
71
86
201
201+
0.70 ppb
0
36
76
186
605
1005+
3.70 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Northborough, Massachusetts
Northborough, Massachusetts
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AQI 19
Good
0.74μg/m³
PM2.5
3.02μg/m³
PM10
20.82ppb
O3
0.69ppb
SO2
3.98ppb
NO2
0.22ppm
CO
AQI 19
Good
0.84μg/m³
PM2.5
2.05μg/m³
PM10
20.53ppb
O3
0.69ppb
SO2
3.69ppb
NO2
0.20ppm
CO
AQI 19
Good
0.79μg/m³
PM2.5
4.41μg/m³
PM10
20.82ppb
O3
0.73ppb
SO2
3.94ppb
NO2
0.22ppm
CO
AQI 19
Good
1.12μg/m³
PM2.5
4.16μg/m³
PM10
20.95ppb
O3
0.71ppb
SO2
4.00ppb
NO2
0.22ppm
CO
AQI 19
Good
0.91μg/m³
PM2.5
3.12μg/m³
PM10
19.54ppb
O3
0.74ppb
SO2
4.18ppb
NO2
0.20ppm
CO
AQI 19
Good
0.85μg/m³
PM2.5
2.08μg/m³
PM10
20.63ppb
O3
0.75ppb
SO2
4.47ppb
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 10:00:00 on 2026-09-28.
In the last 24 hrs, the best air quality in Northborough, Massachusetts was observed at 11:00:00 on 2026-09-28.
The current air quality in Northborough, Massachusetts is 18, 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 0.888 μg/m3.
The current PM10 concentration at Northborough, Massachusetts is 3.113 μg/m3.
The current carbon monoxide (CO) concentration at Northborough, Massachusetts is 0.212 ppm.
The current sulfur dioxide (SO2) concentration at Northborough, Massachusetts is 0.703 ppb.
The current ozone (O3) concentration at Northborough, Massachusetts is 19.122 ppm.
The current nitrogen dioxide (NO2) concentration at Northborough, Massachusetts is 3.697 ppb.
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