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.

Clear

75°F

24°C

Humidity 47%
Wind Speed SW 3 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 07 Jul 09:20 AM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

Heat Advisory July 8, 10:00am until July 9, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 95. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 65. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 98. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 98 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 68. West wind 5 to 10 mph becoming light southwest in the evening. Winds could gust as high as 20 mph.

    Low: 68 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 99. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 99 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 95. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Clear, with a low around 65. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 98. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Clear, with a low around 68. West wind 5 to 10 mph becoming light southwest in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 99. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 96.
Friday Night
Mostly clear, with a low around 64.
Saturday
Mostly sunny, with a high near 92.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Partly sunny, with a high near 91.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A slight chance of showers. Mostly sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rancho Cucamonga CA
 34.09°N 117.53°W (Elev. 1106 ft)
Last Update:
5:40 am PDT Jul 7, 2026
Forecast Valid:
9am PDT Jul 7, 2026-6pm PDT Jul 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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