Stay updated with real-time air quality in Westfield, 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)
52
Moderate
Westfield, Massachusetts
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.25 μg/m³
0
55
155
255
425
605+
20.16 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
4.16 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Westfield, Massachusetts
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AQI 62
Moderate
14.67μg/m³
PM2.5
65.68μg/m³
PM10
16.88ppb
O3
0.21ppb
SO2
4.88ppb
NO2
0.19ppm
CO
AQI 60
Moderate
14.13μg/m³
PM2.5
62.96μg/m³
PM10
17.41ppb
O3
0.24ppb
SO2
4.54ppb
NO2
0.19ppm
CO
AQI 60
Moderate
14.07μg/m³
PM2.5
60.25μg/m³
PM10
18.13ppb
O3
0.25ppb
SO2
4.89ppb
NO2
0.19ppm
CO
AQI 62
Moderate
14.72μg/m³
PM2.5
65.93μg/m³
PM10
16.83ppb
O3
0.21ppb
SO2
4.91ppb
NO2
0.19ppm
CO
AQI 58
Moderate
12.68μg/m³
PM2.5
56.52μg/m³
PM10
18.44ppb
O3
0.33ppb
SO2
3.60ppb
NO2
0.19ppm
CO
AQI 58
Moderate
13.10μg/m³
PM2.5
53.55μg/m³
PM10
20.27ppb
O3
0.37ppb
SO2
4.03ppb
NO2
0.19ppm
CO
The air quality data for Massachusetts, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Westfield, Massachusetts are available every hour.
Westfield, Massachusetts experienced its worst air quality at 11:00:00, 2025-06-06.
The best air quality in Westfield, Massachusetts was observed at 07:00:00 on 2025-06-07.
The air quality in Westfield, Massachusetts right now is Moderate, with an AQI of 52.
In Westfield, Massachusetts, PM2.5 is the most frequently found pollutant.
When air quality in Westfield, Massachusetts is compromised, staying indoors and wearing a mask can reduce health risks.
Westfield, Massachusetts currently has a PM2.5 concentration of 10.196 μg/m3.
Westfield, Massachusetts currently has a PM10 concentration of 25.253 μg/m3.
The current carbon monoxide (CO) level in Westfield, Massachusetts is 0.185 ppm.
The current sulfur dioxide (SO2) concentration in Westfield, Massachusetts is 0.34 ppb.
Westfield, Massachusetts currently has an ozone (O3) concentration of 20.158 ppm.
The current level of nitrogen dioxide (NO2) in Westfield, Massachusetts is 4.156 ppb.
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