Hazardous Weather Conditions
Current conditions at
Altoona - Blair County Airport (KAOO)
Lat: 40.3°NLon: 78.32°WElev: 1467ft.
Fog/Mist
59°F
15°C
| Humidity | 100% |
| Wind Speed | NE 3 mph |
| Barometer | 30.13 in (1019.8 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 3.00 mi |
| Last update | 21 Aug 12:53 am EDT |
Extended Forecast for
4 Miles N Williamsburg PA
Dense Fog Advisory until August 21, 10:00am
NOW until 10:00am Fri
Dense Fog Advisory
Overnight
Low: 57 °F
Areas Fog
Friday
High: 79 °F
Dense Fog
then SunnyFriday Night
Low: 58 °F
Areas Fog
Saturday
High: 78 °F
Showers
Likely and
Areas FogSaturday Night
Low: 61 °F
Chance
Showers and
Patchy FogSunday
High: 77 °F
Slight Chance
Showers then
Slight Chance
T-stormsSunday Night
Low: 56 °F
Mostly Clear
Monday
High: 75 °F
Mostly Sunny
Detailed Forecast
Overnight
Areas of fog. Otherwise, partly cloudy, with a low around 57. Calm wind.
Friday
Widespread dense fog before 11am. Otherwise, sunny, with a high near 79. Calm wind.
Friday Night
Areas of fog after 10pm. Otherwise, partly cloudy, with a low around 58. Calm wind.
Saturday
A chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Areas of fog before noon. Otherwise, mostly cloudy, with a high near 78. Calm wind becoming southeast 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. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 77. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 56.
Monday
Mostly sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles N Williamsburg PA
40.52°N 78.2°W (Elev. 997 ft)
40.52°N 78.2°W (Elev. 997 ft)
1:26 am EDT Aug 21, 2026
1am EDT Aug 21, 2026-6pm EDT Aug 27, 2026
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