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

Hazardous Weather Conditions

Current conditions at

Ontario International Airport (KONT)

Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.

Partly Cloudy

89°F

32°C

Humidity 30%
Wind Speed WNW 6 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 04 Aug 01:53 PM PDT
Extended Forecast for

2 Miles SW Rancho Cucamonga CA

Heat Advisory August 6, 10:00am until August 8, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Widespread haze. Sunny, with a high near 92. West wind around 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Haze

  • Tonight

    Tonight: Widespread haze before 11pm. Mostly clear, with a low around 65. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 65 °F

    Haze then
    Mostly Clear

  • Tuesday

    Tuesday: Widespread haze after 11am. Sunny, with a high near 94. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 94 °F

    Haze

  • Tuesday Night

    Tuesday Night: Widespread haze before 11pm. Mostly clear, with a low around 66. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 66 °F

    Haze then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 99.

    High: 99 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 98.

    High: 98 °F

    Sunny

Detailed Forecast

This Afternoon
Widespread haze. Sunny, with a high near 92. West wind around 10 mph, with gusts as high as 20 mph.
Tonight
Widespread haze before 11pm. Mostly clear, with a low around 65. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Tuesday
Widespread haze after 11am. Sunny, with a high near 94. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Widespread haze before 11pm. Mostly clear, with a low around 66. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 97. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 99.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 98.
Friday Night
Mostly clear, with a low around 68.
Saturday
Sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 68.
Sunday
Sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Rancho Cucamonga CA
 34.1°N 117.59°W (Elev. 1224 ft)
Last Update:
1:03 pm PDT Aug 4, 2025
Forecast Valid:
2pm PDT Aug 4, 2025-6pm PDT Aug 10, 2025
 
Forecast Discussion
 
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Additional Resources

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