


Current conditions at
Ontario International Airport (KONT)
Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.
Partly Cloudy
82°F
28°C
Humidity | 45% |
Wind Speed | WSW 11 MPH |
Barometer | 29.91 in (1012.87 mb) |
Dewpoint | 59°F (15°C) |
Visibility | 10.00 mi |
Heat Index | 82°F (28°C) |
Last update | 29 Sep 04:53 PM PDT |
Extended Forecast for
Ontario CA
Tonight
Low: 62 °F
Patchy
Drizzle and
Patchy FogTuesday
High: 79 °F
Patchy
Drizzle and
Patchy Fog
then Mostly
SunnyTuesday Night
Low: 58 °F
Mostly Cloudy
Wednesday
High: 80 °F
Decreasing
CloudsWednesday Night
Low: 59 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 59 °F
Mostly Clear
Friday
High: 81 °F
Sunny
Friday Night
Low: 59 °F
Mostly Clear
Detailed Forecast
Tonight
Patchy drizzle after 11pm. Patchy fog after 2am. Otherwise, increasing clouds, with a low around 62. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Patchy drizzle and fog before 11am. Cloudy through mid morning, then gradual clearing, with a high near 79. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 58. West wind 5 to 10 mph becoming light southwest after midnight.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 80. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 59. West wind 5 to 10 mph becoming light after midnight.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 78.
Sunday Night
Increasing clouds, with a low around 58.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 73.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Ontario CA
34.05°N 117.61°W (Elev. 902 ft)
34.05°N 117.61°W (Elev. 902 ft)
1:00 pm PDT Sep 29, 2025
5pm PDT Sep 29, 2025-6pm PDT Oct 6, 2025