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

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

78°F

26°C

Humidity 60%
Wind Speed S 9 mph
Barometer 30.18 in (1021.5 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 May 9:53 am EDT
Extended Forecast for

Pittsburgh PA

  • Today

    Today: Sunny and hot, with a high near 91. Southwest wind 8 to 13 mph.

    High: 91 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 69. South wind 5 to 7 mph.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 90. Southwest wind 8 to 16 mph, with gusts as high as 26 mph.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 68. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers before 11am, then showers and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 78. West wind 9 to 11 mph becoming northwest in the afternoon. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 50. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny and hot, with a high near 91. Southwest wind 8 to 13 mph.
Tonight
Partly cloudy, with a low around 69. South wind 5 to 7 mph.
Tuesday
Mostly sunny and hot, with a high near 90. Southwest wind 8 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 68. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers before 11am, then showers and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 78. West wind 9 to 11 mph becoming northwest in the afternoon. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 50. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Partly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.
Friday Night
Showers. Low around 58. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Sunday
A chance of showers. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Pittsburgh PA
 40.43°N 79.98°W (Elev. 814 ft)
Last Update:
7:11 am EDT May 18, 2026
Forecast Valid:
10am EDT May 18, 2026-6pm EDT May 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation