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

90°F

32°C

Humidity 35%
Wind Speed WSW 13 MPH
Barometer 29.84 in (1010.5 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 16 Jun 06:20 PM PDT
Extended Forecast for

2 Miles SW Rancho Cucamonga CA

Heat Advisory until June 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until June 18, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 65 °F

    Mostly Clear

  • Tuesday

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

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 65 °F

    Mostly Clear

  • Wednesday

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

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 65. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 25 mph.
Tuesday
Sunny, with a high near 95. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 65. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 95. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 63. West wind 5 to 15 mph, with gusts as high as 20 mph.
Juneteenth
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 60.
Saturday
Patchy fog before 11am. Otherwise, sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 60.
Monday
Patchy fog. Otherwise, sunny, with a high near 85.
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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:
12:59 pm PDT Jun 16, 2025
Forecast Valid:
6pm PDT Jun 16, 2025-6pm PDT Jun 23, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation