Air Quality in Radnor, United States

Drizzle
23.2°C · 94.8% humidity
23.2°
Feels 23.2°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
65 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
10 2pm
10
10
23 5pm
19
17
17 8pm
15
12
12 11pm
11
11
11 2am
10
10
10 5am
10
10
10 8am
10
10
9 11am
9
9
Station readings
7
14
CAMS model adj -15
25
25
25
25
25
25
27
27
25
25
25
25
25
25
25
25
25
25
25
25
25
24
24
24
AD 728×90

Air Quality Index Trend

39h · 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.

94.8%
Humidity
61.8 km/h
Wind NNW
1013.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
23
5.56 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Radnor?

Temperature & Precipitation

PM2.5 Trend

39h · 1 station
PM2.55.56 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (65 stations within 25 km)
5.56
Median
5.48
Average
2.65
Low
11.5
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +0.4

What is the 7-day forecast for Radnor?

05-29
20.2° 11.3°
0.06 mm
05-30
23.2° 10.2°
15.38 mm
05-31
28.8° 9.7°
06-01
28.0° 13.8°
06-02
21.9° 12.3°
06-03
25.5° 18.2°
3.69 mm
06-04
22.9° 19.9°
Both models agree Avg diff: 4.7°C

Where are air quality stations near Radnor?

31
Norristown, Pennsylvania, USA
8.5 km PM2.5: 7.4 µg/m³
20
AMS ROX Station
10.1 km PM2.5: 4.8 µg/m³
21
6906 City Ave
10.9 km PM2.5: 5.1 µg/m³
20
C077 ( 945 Manatawna Ave)
11.1 km PM2.5: 4.9 µg/m³
20
C029 (5400 Lincoln Hwy)
11.8 km PM2.5: 4.9 µg/m³
20
CAMP - OEEC Installation 9
12.0 km PM2.5: 4.7 µg/m³
20
6237 Ridge Ave
12.2 km PM2.5: 4.7 µg/m³
20
723 Wolcott Dr (2)
12.8 km PM2.5: 4.9 µg/m³
20
5029 Ridge ave
13.0 km PM2.5: 4.9 µg/m³
24
8701 Germantown Ave
13.4 km PM2.5: 5.7 µg/m³

What cities are near Radnor?

25 King of Prussia 22 Havertown 31 Norristown 20 Overbrook 22 Drexel Hill 22 Haddington 21 East Mount Airy 22 Cobbs Creek 31 Phoenixville 23 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 2026-05-29T21:24 UTC.