Stay updated with real-time air quality in Reading, 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)
28
Good
Reading, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.74 μg/m³
0
55
155
255
425
605+
29.73 ppb
0
55
71
86
201
201+
0.52 ppb
0
36
76
186
605
1005+
7.79 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Reading, Massachusetts
Reading, Massachusetts
Scroll To Air Quality MapLoading...
AQI 27
Good
4.64μg/m³
PM2.5
18.70μg/m³
PM10
13.36ppb
O3
0.33ppb
SO2
14.07ppb
NO2
0.55ppm
CO
AQI 27
Good
4.87μg/m³
PM2.5
19.21μg/m³
PM10
12.01ppb
O3
0.34ppb
SO2
15.70ppb
NO2
0.55ppm
CO
AQI 22
Good
4.49μg/m³
PM2.5
18.23μg/m³
PM10
14.50ppb
O3
0.33ppb
SO2
12.79ppb
NO2
0.55ppm
CO
AQI 44
Good
8.00μg/m³
PM2.5
33.23μg/m³
PM10
12.42ppb
O3
0.31ppb
SO2
11.60ppb
NO2
0.50ppm
CO
AQI 44
Good
8.31μg/m³
PM2.5
33.60μg/m³
PM10
10.85ppb
O3
0.32ppb
SO2
18.78ppb
NO2
0.50ppm
CO
AQI 38
Good
6.19μg/m³
PM2.5
40.90μg/m³
PM10
10.96ppb
O3
0.36ppb
SO2
16.88ppb
NO2
0.53ppm
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 Reading, Massachusetts is updated on an hourly basis.
The worst air quality in Reading, Massachusetts was recorded at 03:00:00 on 2025-11-03.
The best air quality in Reading, Massachusetts was recorded at 02:00:00 on 2025-11-02.
The real-time air quality index in Reading, Massachusetts is 38, currently categorized as Good.
The most common pollutant in Reading, Massachusetts is PM2.5.
If the air quality in Reading, Massachusetts is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Reading, Massachusetts at present are 7.414 μg/m3.
The current PM10 levels in Reading, Massachusetts are 32.797 μg/m3.
The current carbon monoxide (CO) level in Reading, Massachusetts is 0.509 ppm.
The current sulfur dioxide (SO2) levels in Reading, Massachusetts are 0.325 ppb.
The current ozone (O3) levels at Reading, Massachusetts is 11.002 ppm.
The current nitrogen dioxide (NO2) levels at Reading, Massachusetts is 18.97 ppb.
All Rights Reserved © Ambee Inc. 2025