Downtown Los Angeles woke up Tuesday to patchy fog and mid 50s chill, but the real story is how fast that cool start flips to full-on heat. After a mild day near 70°F with clearing skies, a strong ridge of high pressure will push highs into the 80s on Wednesday, then into the 90s by Thursday and Friday. Inland neighborhoods and familiar valley hot spots could flirt with 100°F by Friday, while the coast hangs onto noticeably cooler air.
Foggy Mornings, Sunny Afternoons
Patchy fog is most likely through midmorning, trimming visibility for some commutes and coastal routes before it burns off into partly sunny skies. Light onshore winds early in the day will give way to a breezier southwest flow in the afternoon, with gusts near 10 mph that will make the inland warmup feel especially abrupt. If you have morning travel or outdoor plans, build in a little extra time until those low clouds clear.
Dangerous Midweek Heat
A strong high-pressure ridge builds on Wednesday, sending daytime highs into the low 80s midweek and then into the upper 90s on Thursday and Friday. Some inland spots are forecast to approach 100°F, with recent guidance pegging 97°F on Thursday and 99°F on Friday. Gusty offshore winds are possible late Tuesday night into Wednesday morning in mountain areas and along the I-5 corridor, and this same pattern raises the odds of heat advisories or warnings later this week.
Overnight lows will stay elevated in the upper 50s to mid 60s, which means limited relief after sunset even as daytime temperatures spike. According to the National Weather Service in Los Angeles, this warm spell could challenge or break daily records across the region.
How To Prepare
Try to shift strenuous outdoor activity to the morning hours, keep water handy, and check in on older neighbors and pets during the hottest part of the afternoon. Coastal neighborhoods can expect the marine layer to act like natural air conditioning, keeping beaches and the immediate shoreline cooler while inland areas take the brunt of the heat.
Updates will follow if formal heat advisories are issued. For more on this recent weather whiplash, see our recent temperature swings.
