Hazardous Weather Conditions
Current conditions at
Altoona - Blair County Airport (KAOO)
Lat: 40.3°NLon: 78.32°WElev: 1467ft.
Fog/Mist
56°F
13°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 30.14 in (1020.5 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 6.00 mi |
| Last update | 21 Aug 5:53 am EDT |
Extended Forecast for
Hollidaysburg PA
Dense Fog Advisory until August 21, 10:00am
NOW until 10:00am Fri
Dense Fog Advisory
Today
High: 79 °F
Dense Fog
then SunnyTonight

Low: 57 °F
Patchy Fog
Saturday

High: 78 °F
Showers
Likely and
Areas FogSaturday Night

Low: 60 °F
Showers
Sunday
High: 77 °F
Chance
Showers then
Chance
T-stormsSunday Night

Low: 54 °F
Mostly Clear
Monday

High: 75 °F
Sunny
Monday Night

Low: 54 °F
Mostly Clear
Detailed Forecast
Today
Widespread dense fog before 11am. Otherwise, sunny, with a high near 79. Calm wind.
Tonight
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 57. Calm wind.
Saturday
A chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 78. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers after 2am. Low around 60. Calm wind. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 77. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Hollidaysburg PA
40.43°N 78.42°W (Elev. 997 ft)
40.43°N 78.42°W (Elev. 997 ft)
6:11 am EDT Aug 21, 2026
6am EDT Aug 21, 2026-6pm EDT Aug 27, 2026



