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)
52
Moderate
Longmeadow, Massachusetts
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.05 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
42.97 μg/m³
0
55
155
255
425
605+
20.11 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
5.74 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Longmeadow, Massachusetts
Longmeadow, Massachusetts
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AQI 56
Moderate
11.89μg/m³
PM2.5
50.34μg/m³
PM10
14.04ppb
O3
0.15ppb
SO2
5.74ppb
NO2
0.24ppm
CO
AQI 56
Moderate
12.26μg/m³
PM2.5
55.89μg/m³
PM10
14.84ppb
O3
0.14ppb
SO2
4.33ppb
NO2
0.24ppm
CO
AQI 54
Moderate
11.17μg/m³
PM2.5
41.52μg/m³
PM10
16.73ppb
O3
0.14ppb
SO2
8.20ppb
NO2
0.24ppm
CO
AQI 44
Good
8.24μg/m³
PM2.5
43.02μg/m³
PM10
14.47ppb
O3
0.15ppb
SO2
7.44ppb
NO2
0.23ppm
CO
AQI 56
Moderate
12.21μg/m³
PM2.5
55.59μg/m³
PM10
14.69ppb
O3
0.14ppb
SO2
4.43ppb
NO2
0.24ppm
CO
AQI 56
Moderate
11.67μg/m³
PM2.5
52.38μg/m³
PM10
13.28ppb
O3
0.14ppb
SO2
5.51ppb
NO2
0.24ppm
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 06:00:00 on 2025-09-15.
In the last 24 hrs, the best air quality in Longmeadow, Massachusetts was observed at 01:00:00 on 2025-09-14.
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 11.455 μg/m3.
The current PM10 concentration at Longmeadow, Massachusetts is 46.926 μg/m3.
The current carbon monoxide (CO) concentration at Longmeadow, Massachusetts is 0.261 ppm.
The current sulfur dioxide (SO2) concentration at Longmeadow, Massachusetts is 0.183 ppb.
The current ozone (O3) concentration at Longmeadow, Massachusetts is 12.737 ppm.
The current nitrogen dioxide (NO2) concentration at Longmeadow, Massachusetts is 6.06 ppb.
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