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

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.62 μg/m³
0
55
155
255
425
605+
30.41 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
3.78 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Holbrook, Massachusetts
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AQI 49
Good
9.44μg/m³
PM2.5
38.18μg/m³
PM10
30.01ppb
O3
0.35ppb
SO2
3.56ppb
NO2
0.28ppm
CO
AQI 49
Good
9.11μg/m³
PM2.5
40.84μg/m³
PM10
31.89ppb
O3
0.38ppb
SO2
4.00ppb
NO2
0.26ppm
CO
AQI 49
Good
8.82μg/m³
PM2.5
37.18μg/m³
PM10
29.64ppb
O3
0.36ppb
SO2
3.09ppb
NO2
0.28ppm
CO
AQI 49
Good
9.15μg/m³
PM2.5
39.45μg/m³
PM10
30.98ppb
O3
0.37ppb
SO2
3.93ppb
NO2
0.27ppm
CO
AQI 49
Good
9.47μg/m³
PM2.5
38.63μg/m³
PM10
30.36ppb
O3
0.35ppb
SO2
3.53ppb
NO2
0.28ppm
CO
AQI 49
Good
9.11μg/m³
PM2.5
38.24μg/m³
PM10
30.20ppb
O3
0.35ppb
SO2
3.79ppb
NO2
0.28ppm
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 Holbrook, Massachusetts is updated every hour.
The worst air quality in Holbrook, Massachusetts in the last 24 hours was observed at 10:00:00 on 2026-03-11.
In the last 24 hrs, the best air quality in Holbrook, Massachusetts was observed at 01:00:00 on 2026-03-11.
The current air quality in Holbrook, Massachusetts is 49, categorized as Good based on real-time data.
The most common pollutant in Holbrook, Massachusetts is PM2.5.
If the air quality in Holbrook, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Holbrook, Massachusetts is 9.2 μg/m3.
The current PM10 concentration at Holbrook, Massachusetts is 38.624 μg/m3.
The current carbon monoxide (CO) concentration at Holbrook, Massachusetts is 0.276 ppm.
The current sulfur dioxide (SO2) concentration at Holbrook, Massachusetts is 0.356 ppb.
The current ozone (O3) concentration at Holbrook, Massachusetts is 30.407 ppm.
The current nitrogen dioxide (NO2) concentration at Holbrook, Massachusetts is 3.781 ppb.
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