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Radnor (Pennsylvania) (US)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Regen
3°C
Regen
Humidity
93.2%
Wind
4 m/s
Pressure
1015.4 hPa
Direction
84°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-2° / 3°
Precip.
27.6mm
Max wind
8.2 m/s

Hourly Forecast

22.02
Now
Weather
0.7
22.02
17:00
Weather
0.6
22.02
18:00
Weather
0.9
22.02
19:00
Weather
1.1
5
22.02
20:00
Weather
1.3
6
22.02
21:00
Weather
1.4
7
22.02
22:00
Weather
1.3
7
22.02
23:00
Weather
-0°
1.7
7
23.02
00:00
Weather
-0°
1.8
7
23.02
01:00
Weather
-1°
2
7
23.02
02:00
Weather
-1°
1.6
7
23.02
03:00
Weather
-1°
1.2
8
23.02
04:00
Weather
-1°
1.3
8
23.02
05:00
Weather
-1°
1.5
8
23.02
06:00
Weather
-1°
1.6
8
23.02
07:00
Weather
-2°
1.4
8
23.02
08:00
Weather
-2°
1.2
8
23.02
09:00
Weather
-2°
1.1
8
23.02
10:00
Weather
-2°
1
8
23.02
11:00
Weather
-2°
0.9
8
23.02
12:00
Weather
-2°
0.7
7
23.02
13:00
Weather
-2°
0.5
8
23.02
14:00
Weather
-2°
0.4
8
23.02
15:00
Weather
-2°
0.4
8

Temperature

3°C
-2°C
16:00
3°C
17:00
2°C
18:00
3°C
19:00
2°C
20:00
2°C
21:00
1°C
22:00
0°C
23:00
-0°C
00:00
-0°C
01:00
-1°C
02:00
-1°C
03:00
-1°C
04:00
-1°C
05:00
-1°C
06:00
-1°C
07:00
-2°C
08:00
-2°C
09:00
-2°C
10:00
-2°C
11:00
-2°C
12:00
-2°C
13:00
-2°C
14:00
-2°C
15:00
-2°C
16:00 03:00 15:00

Precipitation

2mm
0mm
16:00
0.7mm
17:00
0.6mm
18:00
0.9mm
19:00
1.1mm
20:00
1.3mm
21:00
1.4mm
22:00
1.3mm
23:00
1.7mm
00:00
1.8mm
01:00
2mm
02:00
1.6mm
03:00
1.2mm
04:00
1.3mm
05:00
1.5mm
06:00
1.6mm
07:00
1.4mm
08:00
1.2mm
09:00
1.1mm
10:00
1mm
11:00
0.9mm
12:00
0.7mm
13:00
0.5mm
14:00
0.4mm
15:00
0.4mm
16:00 03:00 15:00

Wind

8.2m/s
0m/s
16:00
4.2 m/s
17:00
4.1 m/s
18:00
4.8 m/s
19:00
5.2 m/s
20:00
5.7 m/s
21:00
6.7 m/s
22:00
7.1 m/s
23:00
7 m/s
00:00
6.7 m/s
01:00
7 m/s
02:00
7.3 m/s
03:00
7.5 m/s
04:00
7.8 m/s
05:00
8 m/s
06:00
8.1 m/s
07:00
8.2 m/s
08:00
8.2 m/s
09:00
7.9 m/s
10:00
7.5 m/s
11:00
7.5 m/s
12:00
7.4 m/s
13:00
7.6 m/s
14:00
7.8 m/s
15:00
7.7 m/s
16:00 03:00 15:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
24.4 km
119
39.7%

Measurement time: 2026-02-22 15:00

Calculated from PM2.5/PM10

PM2.5
24.4 km
43 µg/m3
51.2%

Measurement time: 2026-02-22 15:00

source: Aqicn

O3
41.1 km
73.3 µg/m3
45.8%

Measurement time: 2026-02-22 15:38

source: OpenWeatherMap

NO2
24.4 km
13 µg/m3
6.5%

Measurement time: 2026-02-22 15:00

source: Aqicn

PM10
41.1 km
7.06 µg/m3
5%

Measurement time: 2026-02-22 15:38

source: OpenWeatherMap

CO
41.1 km
0.23642 mg/m3
1.7%

Measurement time: 2026-02-22 15:38

source: OpenWeatherMap

SO2
24.4 km
1.5 µg/m3
0.4%

Measurement time: 2026-02-22 15:00

source: Aqicn

Info


Latitude: 40.04622
Longitude: -75.35991


Solar Energy

Moderate
302 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Radnor

About Air Quality in Radnor

Air quality in Radnor is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Radnor

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Radnor?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Radnor

If you're planning outdoor activities in Radnor, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.