Los Angeles/ Weather & Environment

Downtown LA Sizzles at 90 Degrees as Morning Fog Creeps Back In

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Published on August 18, 2026
Downtown LA Sizzles at 90 Degrees as Morning Fog Creeps Back InSource: Unsplash/Cedric Letsch

Downtown Los Angeles was starting Tuesday at about 67 degrees under mostly cloudy skies, but the clouds will give way to a warm afternoon near 90. The heat builds through Thursday before easing slightly into the weekend, while overnight lows remain stuck in the upper 60s. Inland valleys and lower mountain areas face the most significant heat concerns.

Warmest Stretch Arrives Tuesday Through Thursday

Tuesday will be partly sunny with a high near 90 and southwest winds ranging from calm to 10 mph, according to the National Weather Service. Wednesday should also reach about 90 degrees, followed by a slightly hotter Thursday near 91. The agency says moderate heat risk is expected in the warmest parts of the region, with heat advisories in effect through Thursday for several inland valleys and lower mountain elevations.

Downtown Stays Dry As Fog Returns Overnight

Rain is essentially off the table, with precipitation chances at or near zero through the forecast period. Patchy fog could develop after 5 a.m. Wednesday, clear before late morning, and return overnight Wednesday and Thursday. That means early risers may get a brief gray start before mostly sunny skies take over.

Afternoon Winds Pick Up

Winds should increase from around 5 mph late Tuesday morning to about 10 mph during the afternoon, generally from the southwest. Friday through Sunday will be a touch cooler, with highs around 89, 89 and 88 degrees, respectively. Monday looks milder still, with a sunny high near 87.

Plan Outdoor Time Around The Heat

For outdoor work, exercise or errands, the more comfortable window will be early in the day or after sunset. Drink water, take breaks from direct sun, and check on older adults, young children, neighbors and pets during the warmest hours. Los Angeles County maintains a heat-safety resource page with cooling-center information and other ways to find relief.