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)
69
Moderate
Longmeadow, Massachusetts
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
18.51 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
76.42 μg/m³
0
55
155
255
425
605+
24.75 ppb
0
55
71
86
201
201+
0.10 ppb
0
36
76
186
605
1005+
3.32 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Longmeadow, Massachusetts
Longmeadow, Massachusetts
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AQI 54
Moderate
11.18μg/m³
PM2.5
59.32μg/m³
PM10
21.58ppb
O3
0.36ppb
SO2
16.86ppb
NO2
0.26ppm
CO
AQI 56
Moderate
12.49μg/m³
PM2.5
27.50μg/m³
PM10
37.85ppb
O3
0.35ppb
SO2
15.86ppb
NO2
0.27ppm
CO
AQI 56
Moderate
11.67μg/m³
PM2.5
39.26μg/m³
PM10
35.71ppb
O3
0.35ppb
SO2
15.43ppb
NO2
0.27ppm
CO
AQI 56
Moderate
11.92μg/m³
PM2.5
39.17μg/m³
PM10
28.44ppb
O3
0.36ppb
SO2
15.97ppb
NO2
0.27ppm
CO
AQI 56
Moderate
12.41μg/m³
PM2.5
27.22μg/m³
PM10
38.02ppb
O3
0.35ppb
SO2
15.98ppb
NO2
0.27ppm
CO
AQI 56
Moderate
12.27μg/m³
PM2.5
26.71μg/m³
PM10
38.48ppb
O3
0.35ppb
SO2
16.19ppb
NO2
0.26ppm
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 03:00:00 on 2025-07-30.
In the last 24 hrs, the best air quality in Longmeadow, Massachusetts was observed at 05:00:00 on 2025-07-30.
The current air quality in Longmeadow, Massachusetts is 54, categorized as Moderate 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 10.835 μg/m3.
The current PM10 concentration at Longmeadow, Massachusetts is 57.937 μg/m3.
The current carbon monoxide (CO) concentration at Longmeadow, Massachusetts is 0.265 ppm.
The current sulfur dioxide (SO2) concentration at Longmeadow, Massachusetts is 0.355 ppb.
The current ozone (O3) concentration at Longmeadow, Massachusetts is 23.374 ppm.
The current nitrogen dioxide (NO2) concentration at Longmeadow, Massachusetts is 15.966 ppb.
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