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

52°F

11°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 11 Mar 06:35 AM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

Heat Advisory March 12, 10:00am until March 13, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Patchy fog before 8am. Otherwise, sunny, with a high near 85. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Clear, with a low around 59. West wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Light northwest wind becoming north 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 62. North wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 94. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 85. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
Clear, with a low around 59. West wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 93. Light northwest wind becoming north 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Thursday Night
Clear, with a low around 62. North wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 94. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Clear, with a low around 59.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 62.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 98.
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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:
12:52 am PDT Mar 11, 2026
Forecast Valid:
6am PDT Mar 11, 2026-6pm PDT Mar 17, 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