Stay updated with real-time air quality in Lower Merion, Pennsylvania 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)
60
Moderate
Lower Merion, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
13.83 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
61.48 μg/m³
0
55
155
255
425
605+
39.15 ppb
0
55
71
86
201
201+
0.40 ppb
0
36
76
186
605
1005+
8.96 ppb
0
54
101
361
1250
2050+
0.47 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Lower Merion, Pennsylvania
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AQI 37
Good
5.25μg/m³
PM2.5
22.28μg/m³
PM10
39.74ppb
O3
0.30ppb
SO2
5.41ppb
NO2
0.36ppm
CO
AQI 56
Moderate
12.25μg/m³
PM2.5
55.11μg/m³
PM10
38.33ppb
O3
0.34ppb
SO2
6.73ppb
NO2
0.37ppm
CO
AQI 52
Moderate
10.27μg/m³
PM2.5
45.90μg/m³
PM10
38.77ppb
O3
0.42ppb
SO2
7.78ppb
NO2
0.41ppm
CO
AQI 36
Good
6.12μg/m³
PM2.5
26.45μg/m³
PM10
39.36ppb
O3
0.29ppb
SO2
5.10ppb
NO2
0.35ppm
CO
AQI 60
Moderate
13.53μg/m³
PM2.5
61.08μg/m³
PM10
38.03ppb
O3
0.28ppb
SO2
5.92ppb
NO2
0.34ppm
CO
AQI 52
Moderate
9.51μg/m³
PM2.5
42.46μg/m³
PM10
39.38ppb
O3
0.48ppb
SO2
7.84ppb
NO2
0.39ppm
CO
Air quality data and pollutant measurements for Pennsylvania, 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 Lower Merion, Pennsylvania is updated every hour.
The worst air quality in Lower Merion, Pennsylvania in the last 24 hours was observed at 11:00:00 on 2026-03-15.
In the last 24 hrs, the best air quality in Lower Merion, Pennsylvania was observed at 10:00:00 on 2026-03-15.
The current air quality in Lower Merion, Pennsylvania is 60, categorized as Moderate based on real-time data.
The most common pollutant in Lower Merion, Pennsylvania is PM2.5.
If the air quality in Lower Merion, Pennsylvania is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Lower Merion, Pennsylvania is 13.826 μg/m3.
The current PM10 concentration at Lower Merion, Pennsylvania is 61.48 μg/m3.
The current carbon monoxide (CO) concentration at Lower Merion, Pennsylvania is 0.466 ppm.
The current sulfur dioxide (SO2) concentration at Lower Merion, Pennsylvania is 0.398 ppb.
The current ozone (O3) concentration at Lower Merion, Pennsylvania is 39.153 ppm.
The current nitrogen dioxide (NO2) concentration at Lower Merion, Pennsylvania is 8.965 ppb.
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