National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Fog

41°F

5°C

Humidity 96%
Wind Speed Calm
Barometer 30.18 in (1023.0 mb)
Dewpoint 40°F (4°C)
Visibility 0.25 mi
Last update 4 Mar 9:53 pm EST
Extended Forecast for

Mount Union PA

Dense Fog Advisory until March 5, 04:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until March 5, 04:00am

    NOW until 4:00am Thu

    Dense Fog Advisory

  • Tonight

    Low: 41 °F

    Showers and
    Areas Dense
    Fog

  • Thursday

    Thursday: Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Areas of fog before 10am. High near 50. Light east wind. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 50 °F

    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 7pm, then rain and possibly a thunderstorm between 7pm and 1am, then rain likely after 1am. Low around 44. Light southeast wind. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 56. Light southeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers before 1am. Mostly cloudy, with a low around 48. Calm wind. Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, then showers and possibly a thunderstorm after 1pm. High near 72. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Slight Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers likely before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Showers
    Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

Detailed Forecast

Tonight
Drizzle likely before 4am, then showers between 4am and 5am, then rain after 5am. Areas of dense fog. Low around 41. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Areas of fog before 10am. High near 50. Light east wind. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 7pm, then rain and possibly a thunderstorm between 7pm and 1am, then rain likely after 1am. Low around 44. Light southeast wind. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A chance of showers. Mostly cloudy, with a high near 56. Light southeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of showers before 1am. Mostly cloudy, with a low around 48. Calm wind. Chance of precipitation is 20%.
Saturday
A slight chance of showers, then showers and possibly a thunderstorm after 1pm. High near 72. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely before 1am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 50.
Tuesday
A chance of showers. Mostly sunny, with a high near 75. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Wednesday
Showers likely. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Union PA
 40.4°N 77.9°W (Elev. 666 ft)
Last Update:
9:52 pm EST Mar 4, 2026
Forecast Valid:
10pm EST Mar 4, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation