Stay updated with real-time air quality in Radnor, 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)
18
Good
Radnor, Pennsylvania
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.45 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.70 μg/m³
0
55
155
255
425
605+
18.81 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
5.41 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Radnor, Pennsylvania
Radnor, Pennsylvania
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AQI 58
Moderate
12.67μg/m³
PM2.5
56.84μg/m³
PM10
19.31ppb
O3
0.20ppb
SO2
7.25ppb
NO2
0.45ppm
CO
AQI 64
Moderate
15.76μg/m³
PM2.5
59.65μg/m³
PM10
20.54ppb
O3
0.20ppb
SO2
7.84ppb
NO2
0.45ppm
CO
AQI 62
Moderate
15.24μg/m³
PM2.5
67.96μg/m³
PM10
19.15ppb
O3
0.18ppb
SO2
7.18ppb
NO2
0.47ppm
CO
AQI 52
Moderate
9.51μg/m³
PM2.5
32.40μg/m³
PM10
19.82ppb
O3
0.24ppb
SO2
5.90ppb
NO2
0.45ppm
CO
AQI 52
Moderate
9.96μg/m³
PM2.5
31.97μg/m³
PM10
19.82ppb
O3
0.24ppb
SO2
5.91ppb
NO2
0.45ppm
CO
AQI 56
Moderate
11.79μg/m³
PM2.5
55.01μg/m³
PM10
20.57ppb
O3
0.21ppb
SO2
7.74ppb
NO2
0.45ppm
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 Radnor, Pennsylvania is updated every hour.
The worst air quality in Radnor, Pennsylvania in the last 24 hours was observed at 02:00:00 on 2025-08-01.
In the last 24 hrs, the best air quality in Radnor, Pennsylvania was observed at 11:00:00 on 2025-07-31.
The current air quality in Radnor, Pennsylvania is 56, categorized as Moderate based on real-time data.
The most common pollutant in Radnor, Pennsylvania is PM2.5.
If the air quality in Radnor, Pennsylvania is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Radnor, Pennsylvania is 12.002 μg/m3.
The current PM10 concentration at Radnor, Pennsylvania is 54.101 μg/m3.
The current carbon monoxide (CO) concentration at Radnor, Pennsylvania is 0.446 ppm.
The current sulfur dioxide (SO2) concentration at Radnor, Pennsylvania is 0.293 ppb.
The current ozone (O3) concentration at Radnor, Pennsylvania is 18.208 ppm.
The current nitrogen dioxide (NO2) concentration at Radnor, Pennsylvania is 6.778 ppb.
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