Question 1

Will there be thunderstorms in Ontario, CA today?

Accepted Answer

The storm forecast for Ontario, CA shows today's thunderstorm probability, severe weather risk score, wind gust outlook, and any active NWS warnings or watches — everything you need to decide whether to stay indoors or plan outdoor activities safely.

Question 2

Is there a severe weather warning for Ontario, CA today?

Accepted Answer

AskWeather.ai shows live NWS alerts for Ontario, CA — including tornado warnings, severe thunderstorm watches, and flood advisories — alongside today's precipitation probability, wind speed gusts, and a composite severe weather risk score, so you can assess both active official warnings and incoming storm conditions in one place.

Question 3

What is the storm risk level in Ontario, CA right now?

Accepted Answer

AskWeather.ai scores today's storm threat for Ontario, CA on a 1–10 scale using wind speed, lightning probability, precipitation intensity, and active NWS alerts — giving you a single number to quickly judge today's severe weather risk.

Today's High	86°F
Today's Low	55°F
Storm / Rain %	0%
Conditions	Partially cloudy

Thunderstorm Forecast for Ontario, CA

Severe Weather Risk & Storm Probability

Hourly Thunderstorm Timing