Stay updated with real-time air quality in Shrewsbury, 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)
27
Good
Shrewsbury, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.69 μg/m³
0
55
155
255
425
605+
19.34 ppb
0
55
71
86
201
201+
0.18 ppb
0
36
76
186
605
1005+
5.54 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Shrewsbury, Massachusetts
Shrewsbury, Massachusetts
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AQI 27
Good
4.84μg/m³
PM2.5
14.02μg/m³
PM10
21.55ppb
O3
0.35ppb
SO2
5.15ppb
NO2
0.22ppm
CO
AQI 27
Good
5.19μg/m³
PM2.5
9.11μg/m³
PM10
20.10ppb
O3
0.10ppb
SO2
5.98ppb
NO2
0.30ppm
CO
AQI 27
Good
4.59μg/m³
PM2.5
23.03μg/m³
PM10
20.27ppb
O3
0.40ppb
SO2
5.15ppb
NO2
0.21ppm
CO
AQI 22
Good
4.47μg/m³
PM2.5
19.39μg/m³
PM10
19.61ppb
O3
0.27ppb
SO2
5.36ppb
NO2
0.23ppm
CO
AQI 27
Good
5.04μg/m³
PM2.5
11.38μg/m³
PM10
19.05ppb
O3
0.18ppb
SO2
5.44ppb
NO2
0.27ppm
CO
AQI 27
Good
4.80μg/m³
PM2.5
14.82μg/m³
PM10
19.30ppb
O3
0.21ppb
SO2
4.75ppb
NO2
0.25ppm
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 Shrewsbury, Massachusetts is updated on an hourly basis.
The worst air quality in Shrewsbury, Massachusetts was recorded at 05:00:00 on 2026-11-12.
The best air quality in Shrewsbury, Massachusetts was recorded at 01:00:00 on 2026-11-12.
The real-time air quality index in Shrewsbury, Massachusetts is 27, currently categorized as Good.
The most common pollutant in Shrewsbury, Massachusetts is PM2.5.
If the air quality in Shrewsbury, Massachusetts is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Shrewsbury, Massachusetts at present are 5.074 μg/m3.
The current PM10 levels in Shrewsbury, Massachusetts are 11.692 μg/m3.
The current carbon monoxide (CO) level in Shrewsbury, Massachusetts is 0.272 ppm.
The current sulfur dioxide (SO2) levels in Shrewsbury, Massachusetts are 0.179 ppb.
The current ozone (O3) levels at Shrewsbury, Massachusetts is 19.344 ppm.
The current nitrogen dioxide (NO2) levels at Shrewsbury, Massachusetts is 5.541 ppb.
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