Weather in Ontario, California
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 04:22 PM ET · Refreshes every hour
73°F
Clear sky
Feels like 77°F
56%
Humidity
5 mph
Wind Speed
About Weather in Ontario
Ontario is located in California (coordinates: 34.037648°N, 117.604433°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.