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Willow Grove (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

Heavy snow
-1°C
Heavy snow
Humidity
91.9%
Wind
7 m/s
Pressure
1009.1 hPa
Direction
26°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-2° / 2°
Precip.
13.6mm
Max wind
7.8 m/s

Hourly Forecast

23.02
Now
Weather
-1°
1.5
7
23.02
02:00
Weather
-1°
1.7
7
23.02
03:00
Weather
-1°
1.4
7
23.02
04:00
Weather
-1°
1.3
8
23.02
05:00
Weather
-1°
1
8
23.02
06:00
Weather
-1°
0.7
7
23.02
07:00
Weather
-1°
0.9
8
23.02
08:00
Weather
-1°
0.9
8
23.02
09:00
Weather
-2°
0.8
8
23.02
10:00
Weather
-2°
0.7
7
23.02
11:00
Weather
-2°
0.7
7
23.02
12:00
Weather
-2°
0.6
7
23.02
13:00
Weather
-2°
0.4
7
23.02
14:00
Weather
-2°
0.2
8
23.02
15:00
Weather
-1°
0.2
8
23.02
16:00
Weather
-1°
0.2
8
23.02
17:00
Weather
0.2
7
23.02
18:00
Weather
0.2
7
23.02
19:00
Weather
7
23.02
20:00
Weather
7
23.02
21:00
Weather
7
23.02
22:00
Weather
7
23.02
23:00
Weather
-0°
7
24.02
00:00
Weather
-1°
8

Temperature

2°C
-2°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
-1°C
08:00
-1°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
-1°C
16:00
-1°C
17:00
0°C
18:00
1°C
19:00
1°C
20:00
2°C
21:00
1°C
22:00
1°C
23:00
-0°C
00:00
-1°C
01:00 12:00 00:00

Precipitation

1.7mm
0mm
01:00
1.5mm
02:00
1.7mm
03:00
1.4mm
04:00
1.3mm
05:00
1mm
06:00
0.7mm
07:00
0.9mm
08:00
0.9mm
09:00
0.8mm
10:00
0.7mm
11:00
0.7mm
12:00
0.6mm
13:00
0.4mm
14:00
0.2mm
15:00
0.2mm
16:00
0.2mm
17:00
0.2mm
18:00
0.2mm
01:00 12:00 00:00

Wind

7.8m/s
0m/s
01:00
7.1 m/s
02:00
6.9 m/s
03:00
7.1 m/s
04:00
7.5 m/s
05:00
7.6 m/s
06:00
7.3 m/s
07:00
7.6 m/s
08:00
7.8 m/s
09:00
7.8 m/s
10:00
7.4 m/s
11:00
6.7 m/s
12:00
7.3 m/s
13:00
7.2 m/s
14:00
7.5 m/s
15:00
7.8 m/s
16:00
7.5 m/s
17:00
7.4 m/s
18:00
7.1 m/s
19:00
6.9 m/s
20:00
6.8 m/s
21:00
6.9 m/s
22:00
7.1 m/s
23:00
7.3 m/s
00:00
7.5 m/s
01:00 12:00 00:00

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
6.4 km
3
1%

Measurement time: 2026-02-23 01:03

Calculated from PM2.5/PM10

O3
6.4 km
83.04 µg/m3
51.9%

Measurement time: 2026-02-23 01:03

source: OpenWeatherMap

NO2
6.4 km
4.4 µg/m3
2.2%

Measurement time: 2026-02-23 01:03

source: OpenWeatherMap

CO
6.4 km
0.16349 mg/m3
1.2%

Measurement time: 2026-02-23 01:03

source: OpenWeatherMap

PM2.5
6.4 km
0.95 µg/m3
1.1%

Measurement time: 2026-02-23 01:03

source: OpenWeatherMap

PM10
6.4 km
1.17 µg/m3
0.8%

Measurement time: 2026-02-23 01:03

source: OpenWeatherMap

SO2
6.4 km
0.46 µg/m3
0.1%

Measurement time: 2026-02-23 01:03

source: OpenWeatherMap

Info


Latitude: 40.144
Longitude: -75.11573


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About Air Quality in Willow Grove

Air quality in Willow Grove 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 Willow Grove

  • 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 Willow Grove?

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 Willow Grove

If you're planning outdoor activities in Willow Grove, 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.