Ontario, CA
91°
Feels like 91° · H 102° · L 79°
Clothing
Breathable clothing
Breathable and sweat-wicking clothes are recommended in the morning, such as shorts.
TodayTomorrow
Heavy coatLight jacketLong sleevesBreathable clothingShorts
ShortsBreathable clothing
Frequently asked questions
What should I wear in Ontario, CA today?
Breathable clothing. Breathable and sweat-wicking clothes are recommended in the morning, such as shorts.
Can I wear shorts in Ontario, CA today?
Likely yes — with breathable clothing recommended, shorts often work if you run warm.
Do I need an umbrella in Ontario, CA today?
No need. No need for an umbrella in the morning.
What is the UV index in Ontario, CA today?
Today's peak UV index is around 9 (Very high). Avoid midday sun; wear SPF 50+, a hat, and sunglasses.