Stay updated with real-time air quality in Hopkinton, 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)
31
Good
Hopkinton, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.31 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.44 μg/m³
0
55
155
255
425
605+
32.57 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
2.44 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hopkinton, Massachusetts
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AQI 30
Good
3.63μg/m³
PM2.5
15.10μg/m³
PM10
32.28ppb
O3
0.30ppb
SO2
2.63ppb
NO2
0.18ppm
CO
AQI 30
Good
2.95μg/m³
PM2.5
9.44μg/m³
PM10
32.39ppb
O3
0.29ppb
SO2
2.37ppb
NO2
0.18ppm
CO
AQI 30
Good
3.58μg/m³
PM2.5
14.53μg/m³
PM10
32.22ppb
O3
0.29ppb
SO2
2.63ppb
NO2
0.18ppm
CO
AQI 31
Good
3.38μg/m³
PM2.5
15.37μg/m³
PM10
32.89ppb
O3
0.29ppb
SO2
2.14ppb
NO2
0.19ppm
CO
AQI 30
Good
3.19μg/m³
PM2.5
8.44μg/m³
PM10
31.57ppb
O3
0.27ppb
SO2
2.62ppb
NO2
0.19ppm
CO
AQI 30
Good
3.68μg/m³
PM2.5
15.67μg/m³
PM10
32.32ppb
O3
0.30ppb
SO2
2.64ppb
NO2
0.18ppm
CO
Air quality measurements for Massachusetts, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Hopkinton, Massachusetts is updated on an hourly basis.
The worst air quality in Hopkinton, Massachusetts was recorded at 02:00:00 on 2026-02-11.
The best air quality in Hopkinton, Massachusetts was recorded at 03:00:00 on 2026-02-12.
The real-time air quality index in Hopkinton, Massachusetts is 31, currently categorized as Good.
The most common pollutant in Hopkinton, Massachusetts is O3.
If the air quality in Hopkinton, Massachusetts is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Hopkinton, Massachusetts at present are 3.312 μg/m3.
The current PM10 levels in Hopkinton, Massachusetts are 13.441 μg/m3.
The current carbon monoxide (CO) level in Hopkinton, Massachusetts is 0.184 ppm.
The current sulfur dioxide (SO2) levels in Hopkinton, Massachusetts are 0.284 ppb.
The current ozone (O3) levels at Hopkinton, Massachusetts is 32.568 ppm.
The current nitrogen dioxide (NO2) levels at Hopkinton, Massachusetts is 2.439 ppb.
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