Stay updated with real-time air quality in Longmeadow, 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)
33
Good
Longmeadow, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.95 μg/m³
0
55
155
255
425
605+
24.53 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
2.78 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Longmeadow, Massachusetts
Longmeadow, Massachusetts
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AQI 33
Good
6.21μg/m³
PM2.5
26.55μg/m³
PM10
24.59ppb
O3
0.31ppb
SO2
2.80ppb
NO2
0.19ppm
CO
AQI 33
Good
6.42μg/m³
PM2.5
28.53μg/m³
PM10
24.91ppb
O3
0.32ppb
SO2
2.92ppb
NO2
0.18ppm
CO
AQI 33
Good
5.73μg/m³
PM2.5
24.19μg/m³
PM10
24.10ppb
O3
0.29ppb
SO2
2.46ppb
NO2
0.19ppm
CO
AQI 27
Good
5.38μg/m³
PM2.5
15.26μg/m³
PM10
27.73ppb
O3
0.17ppb
SO2
3.54ppb
NO2
0.19ppm
CO
AQI 33
Good
6.39μg/m³
PM2.5
28.39μg/m³
PM10
24.87ppb
O3
0.32ppb
SO2
2.89ppb
NO2
0.18ppm
CO
AQI 33
Good
6.10μg/m³
PM2.5
26.87μg/m³
PM10
24.36ppb
O3
0.32ppb
SO2
2.57ppb
NO2
0.18ppm
CO
Air quality data and pollutant measurements for Massachusetts, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Longmeadow, Massachusetts is updated every hour.
The worst air quality in Longmeadow, Massachusetts in the last 24 hours was observed at 09:00:00 on 2026-08-13.
In the last 24 hrs, the best air quality in Longmeadow, Massachusetts was observed at 05:00:00 on 2026-08-14.
The current air quality in Longmeadow, Massachusetts is 33, categorized as Good based on real-time data.
The most common pollutant in Longmeadow, Massachusetts is PM2.5.
If the air quality in Longmeadow, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Longmeadow, Massachusetts is 6.138 μg/m3.
The current PM10 concentration at Longmeadow, Massachusetts is 25.948 μg/m3.
The current carbon monoxide (CO) concentration at Longmeadow, Massachusetts is 0.187 ppm.
The current sulfur dioxide (SO2) concentration at Longmeadow, Massachusetts is 0.299 ppb.
The current ozone (O3) concentration at Longmeadow, Massachusetts is 24.528 ppm.
The current nitrogen dioxide (NO2) concentration at Longmeadow, Massachusetts is 2.779 ppb.
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