Stay updated with real-time air quality in Lower Gwynedd, 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)
42
Good
Lower Gwynedd, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.96 μg/m³
0
55
155
255
425
605+
45.08 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
6.91 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Lower Gwynedd, Pennsylvania
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AQI 38
Good
4.23μg/m³
PM2.5
18.78μg/m³
PM10
41.35ppb
O3
0.53ppb
SO2
8.06ppb
NO2
0.37ppm
CO
AQI 36
Good
6.23μg/m³
PM2.5
26.05μg/m³
PM10
38.85ppb
O3
0.56ppb
SO2
7.57ppb
NO2
0.35ppm
CO
AQI 38
Good
4.68μg/m³
PM2.5
20.05μg/m³
PM10
40.62ppb
O3
0.55ppb
SO2
8.78ppb
NO2
0.38ppm
CO
AQI 39
Good
6.15μg/m³
PM2.5
29.71μg/m³
PM10
41.65ppb
O3
0.47ppb
SO2
6.61ppb
NO2
0.33ppm
CO
AQI 38
Good
4.85μg/m³
PM2.5
21.50μg/m³
PM10
40.76ppb
O3
0.56ppb
SO2
9.19ppb
NO2
0.39ppm
CO
AQI 39
Good
3.95μg/m³
PM2.5
17.52μg/m³
PM10
41.65ppb
O3
0.51ppb
SO2
7.62ppb
NO2
0.37ppm
CO
Air quality measurements for Pennsylvania, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Lower Gwynedd, Pennsylvania is updated on an hourly basis.
The worst air quality in Lower Gwynedd, Pennsylvania was recorded at 02:00:00 on 2026-03-09.
The best air quality in Lower Gwynedd, Pennsylvania was recorded at 03:00:00 on 2026-03-09.
The real-time air quality index in Lower Gwynedd, Pennsylvania is 42, currently categorized as Good.
The most common pollutant in Lower Gwynedd, Pennsylvania is O3.
If the air quality in Lower Gwynedd, Pennsylvania is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Lower Gwynedd, Pennsylvania at present are 4.438 μg/m3.
The current PM10 levels in Lower Gwynedd, Pennsylvania are 18.964 μg/m3.
The current carbon monoxide (CO) level in Lower Gwynedd, Pennsylvania is 0.333 ppm.
The current sulfur dioxide (SO2) levels in Lower Gwynedd, Pennsylvania are 0.669 ppb.
The current ozone (O3) levels at Lower Gwynedd, Pennsylvania is 45.076 ppm.
The current nitrogen dioxide (NO2) levels at Lower Gwynedd, Pennsylvania is 6.912 ppb.
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