Stay updated with real-time air quality in Stoneham, 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)
69
Moderate
Stoneham, Massachusetts
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
19.08 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
77.78 μg/m³
0
55
155
255
425
605+
24.90 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
7.77 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Stoneham, Massachusetts
Stoneham, Massachusetts
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AQI 69
Moderate
19.28μg/m³
PM2.5
80.14μg/m³
PM10
25.20ppb
O3
0.65ppb
SO2
7.21ppb
NO2
0.25ppm
CO
AQI 71
Moderate
19.60μg/m³
PM2.5
81.26μg/m³
PM10
25.24ppb
O3
0.64ppb
SO2
7.53ppb
NO2
0.24ppm
CO
AQI 67
Moderate
18.38μg/m³
PM2.5
69.78μg/m³
PM10
19.40ppb
O3
0.64ppb
SO2
8.68ppb
NO2
0.25ppm
CO
AQI 67
Moderate
18.38μg/m³
PM2.5
69.78μg/m³
PM10
19.40ppb
O3
0.64ppb
SO2
8.68ppb
NO2
0.25ppm
CO
AQI 69
Moderate
18.50μg/m³
PM2.5
55.90μg/m³
PM10
19.01ppb
O3
0.72ppb
SO2
6.05ppb
NO2
0.25ppm
CO
AQI 71
Moderate
19.61μg/m³
PM2.5
87.31μg/m³
PM10
25.77ppb
O3
0.69ppb
SO2
5.94ppb
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 Stoneham, Massachusetts is updated on an hourly basis.
The worst air quality in Stoneham, Massachusetts was recorded at 03:00:00 on 2025-06-07.
The best air quality in Stoneham, Massachusetts was recorded at 07:00:00 on 2025-06-07.
The real-time air quality index in Stoneham, Massachusetts is 69, currently categorized as Moderate.
The most common pollutant in Stoneham, Massachusetts is PM2.5.
If the air quality in Stoneham, Massachusetts is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Stoneham, Massachusetts at present are 19.084 μg/m3.
The current PM10 levels in Stoneham, Massachusetts are 77.78 μg/m3.
The current carbon monoxide (CO) level in Stoneham, Massachusetts is 0.244 ppm.
The current sulfur dioxide (SO2) levels in Stoneham, Massachusetts are 0.633 ppb.
The current ozone (O3) levels at Stoneham, Massachusetts is 24.896 ppm.
The current nitrogen dioxide (NO2) levels at Stoneham, Massachusetts is 7.773 ppb.
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