Already warm temperatures across much of Southern California are expected to intensify later in the week.
The warming trend is forecast, with heat peaking on Friday, as highs climb near or above 100 degrees across the deserts and the warmest valleys, according to the National Weather Service (NWS).
“Heat will peak on Friday, with highs near or above 100 degrees likely for the deserts and warmest valleys,” the NWS said in its Tuesday forecast discussion.
KTLA’s 7-Day outlook for the Inland Empire shows afternoon highs in the 90s by Thursday and reaching 100 degrees on Friday.
Temperatures closer to the coast will remain closer to normal, at least in the early part of the week.
Air quality further inland is already taking a hit on Tuesday, with Rancho Cucamonga expected to be in the “Unhealthy for Sensitive Groups” category.
A significant drop in temperatures is expected to arrive on Sunday and continue through Monday.
