What is the air quality in Radnor today?

The current Air Quality Index (AQI) in Radnor is 21 (Good). PM2.5 concentration is 5.05 µg/m³.

What is the temperature in Radnor right now?

The current temperature in Radnor is 9.1°C (feels like 5.0°C). Humidity is 83.1% and wind speed is 36.1 km/h.

Is it safe to go outside in Radnor?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Radnor, United States

Drizzle

9.1°C · 83.1% humidity

9.1°

Feels 5.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

67 stations

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

47h · 1 stn

View full history →

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.

83.1%

Humidity

36.1 km/h

Wind NE

1028.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.05 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Radnor?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station

PM2.55.05 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (67 stations within 25 km)

5.05

Median

5.11

Average

2.53

Low

7.9

High

PM2.5 µg/m³ · Model: 6.5 · Bias: +1.5

What is the 7-day forecast for Radnor?

10-21

20.8° 6.8°

0.25 mm

10-22

19.6° 11.4°

2.12 mm

10-23

15.8° 5.8°

10-24

16.5° 8.6°

10-25

19.5° 6.5°

1.06 mm

10-26

14.2° 9.6°

3.25 mm

10-27

11.2° 5.8°

6.56 mm

Both models agree Avg diff: 3.7°C

Where are air quality stations near Radnor?

AMS ROX Station

10.2 km PM2.5: 4.5 µg/m³

6906 City Ave

10.9 km PM2.5: 5.0 µg/m³

C077 ( 945 Manatawna Ave)

11.1 km PM2.5: 4.7 µg/m³

C029 (5400 Lincoln Hwy)

11.8 km PM2.5: 5.2 µg/m³

6237 Ridge Ave

12.2 km PM2.5: 4.6 µg/m³

723 Wolcott Dr (2)

12.8 km PM2.5: 4.6 µg/m³

5029 Ridge ave

13.0 km PM2.5: 4.8 µg/m³

8701 Germantown Ave

13.4 km PM2.5: 5.2 µg/m³

1620 N 52nd St

13.7 km PM2.5: 5.1 µg/m³

51 N 57th St

14.2 km PM2.5: 5.4 µg/m³

What cities are near Radnor?

21 King of Prussia 21 Havertown 21 Norristown 21 Overbrook 21 Drexel Hill 23 Haddington 20 East Mount Airy 22 Cobbs Creek 19 Phoenixville 21 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 2026-10-21T00:30 UTC.