Air Quality in Radnor, United States

Partly Cloudy
18.9°C · 63.6% humidity
18.9°
Feels 18.9°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
62 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
29 8pm
29
29
26 11pm
29
29
29 2am
29
29
29 5am
29
29
29 8am
27
27
27 11am
27
27
27 2pm
27
27
27 5pm
29
29
Station readings
18
20
29
CAMS model adj +2
27
27
27
27
27
27
27
27
27
27
27
27
27
25
25
25
25
25
25
25
25
25
27
27
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.

63.6%
Humidity
9.7 km/h
Wind ESE
1016.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
26
6.16 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Radnor?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.56.16 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (62 stations within 25 km)
6.16
Median
6.17
Average
4.92
Low
8.43
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +0.1

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
25
AMS ROX Station
10.1 km PM2.5: 6.1 µg/m³
25
6906 City Ave
10.9 km PM2.5: 6.0 µg/m³
28
C077 ( 945 Manatawna Ave)
11.1 km PM2.5: 6.6 µg/m³
24
C029 (5400 Lincoln Hwy)
11.8 km PM2.5: 5.7 µg/m³
23
CAMP - OEEC Installation 9
12.0 km PM2.5: 5.5 µg/m³
23
6237 Ridge Ave
12.2 km PM2.5: 5.5 µg/m³
32
723 Wolcott Dr (2)
12.8 km PM2.5: 7.7 µg/m³
25
5029 Ridge ave
13.0 km PM2.5: 5.9 µg/m³
28
8701 Germantown Ave
13.4 km PM2.5: 6.8 µg/m³

What cities are near Radnor?

26 King of Prussia 25 Havertown 26 Norristown 23 Overbrook 25 Drexel Hill 25 Haddington 27 East Mount Airy 25 Cobbs Creek 27 Phoenixville 25 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 2026-07-22T03:13 UTC.