Air Quality in Radnor, United States

Partly Cloudy
23.0°C · 54.3% humidity
23.0°
Feels 23.0°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
64 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
41 6pm
41
41
32 9pm
35
36
38 12am
39
39
40 3am
40
40
41 6am
41
41
39 9am
39
39
39 12pm
39
39
39 3pm
39
39
Station readings
38
35
18
CAMS model adj +14
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
25
25
25
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

47h · 1 stn

Radnor's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

54.3%
Humidity
39.3 km/h
Wind ENE
1014.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
32
7.66 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Radnor?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.57.66 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (64 stations within 25 km)
7.66
Median
7.76
Average
3.6
Low
12.96
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -1.4

What is the 7-day forecast for Radnor?

07-22
24.8° 18.9°
1.06 mm
07-23
28.9° 17.7°
16.06 mm
07-24
26.1° 18.7°
1.06 mm
07-25
31.3° 21.0°
6.31 mm
07-26
24.8° 19.2°
6.69 mm
07-27
26.6° 22.9°
0.44 mm
07-28
33.6° 21.7°
4.88 mm
Both models agree Avg diff: 2.5°C

Where are air quality stations near Radnor?

30
Norristown, Pennsylvania, USA
8.5 km PM2.5: 7.2 µg/m³
38
AMS ROX Station
10.1 km PM2.5: 9.0 µg/m³
35
6906 City Ave
10.9 km PM2.5: 8.3 µg/m³
40
C077 ( 945 Manatawna Ave)
11.1 km PM2.5: 9.7 µg/m³
32
C029 (5400 Lincoln Hwy)
11.8 km PM2.5: 7.7 µg/m³
30
CAMP - OEEC Installation 9
12.0 km PM2.5: 7.3 µg/m³
33
6237 Ridge Ave
12.2 km PM2.5: 7.9 µg/m³
45
723 Wolcott Dr (2)
12.8 km PM2.5: 10.7 µg/m³
34
5029 Ridge ave
13.0 km PM2.5: 8.1 µg/m³
46
8701 Germantown Ave
13.4 km PM2.5: 11.1 µg/m³

What cities are near Radnor?

31 King of Prussia 31 Havertown 28 Norristown 28 Overbrook 31 Drexel Hill 30 Haddington 36 East Mount Airy 31 Cobbs Creek 28 Phoenixville 30 Kingsessing
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-22T01:44 UTC.