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

Pittsburgh International Airport (KPIT)

Lat: 40.48°NLon: 80.21°WElev: 1203ft.

Mostly Cloudy

77°F

25°C

Humidity 56%
Wind Speed N 13 G 20 mph
Barometer 30.14 in (1020.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 28 Aug 1:51 pm EDT
Extended Forecast for

Carnegie PA

  • This Afternoon

    This Afternoon: A slight chance of showers before 3pm. Mostly sunny, with a high near 80. North wind around 8 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 56. North wind around 6 mph becoming calm after midnight.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 83. Light and variable wind.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 86. West wind 3 to 8 mph.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 69.

    Low: 69 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 92.

    High: 92 °F

    Hot

Detailed Forecast

This Afternoon
A slight chance of showers before 3pm. Mostly sunny, with a high near 80. North wind around 8 mph. Chance of precipitation is 20%.
Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 56. North wind around 6 mph becoming calm after midnight.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 83. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 64. Calm wind.
Sunday
Mostly sunny, with a high near 86. West wind 3 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 69.
Monday
Partly sunny, with a high near 88.
Monday Night
Mostly cloudy, with a low around 72.
Tuesday
Mostly sunny and hot, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 50%.
Thursday
A chance of showers. Partly sunny, with a high near 87. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carnegie PA
 40.4°N 80.08°W (Elev. 899 ft)
Last Update:
1:06 pm EDT Aug 28, 2026
Forecast Valid:
2pm EDT Aug 28, 2026-6pm EDT Sep 3, 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