For a few minutes during the lunch hour in Simi Valley it rained. With overcast skies and 90-plus degree temperatures, the rain only added to the muggy, hot conditions.
"The humidity, you can almost swim through it, it's pretty thick. I'm not used to this," said resident Kevin Gysler.
The triple-digit temperatures across Southern California are throwing a curve ball at leisurely summer plans. The increasing humidity also has residents in the San Fernando Valley uncomfortable.
"You can feel it. You can definitely feel it. Everybody's going to have bad hair days," said Woodland Hills resident Natalie Tomlinson.
The humidity can be dangerous and cause heat-related illness. Outdoor activity should be limited or done during cooler parts of the day as humidity slows down the evaporation of sweat from the body, which increases the potential for heat-related illnesses.
Friday morning, people were trying to run their errands and get their workouts in before the mercury began to rise.
"It feels like we're in the desert right now. It's unbearable almost," said Luis Palma.
An excessive heat watch remains in effect through Saturday for the San Gabriel, San Fernando and Santa Clarita valleys and the L.A. County mountains as temperatures are expected to reach potentially dangerous digits.
Medical experts remind you to drink more water than you think you need, cover up and wear plenty of sunscreen.