California Summer Weather Alert: 90°F Heat Returns to Los Angeles by Thursday — Fog and Health Risks Follow Into Weekend

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Los Angeles, California – Sunny skies and near-90°F heat will grip Los Angeles on Thursday, July 10, as the region kicks off a warm, fog-prone stretch into early next week.

According to the National Weather Service office in Oxnard, Los Angeles will see highs near 90°F on Thursday under clear skies, with light afternoon winds from the southwest. But while the heat dominates daytime hours, low-level moisture will bring patchy fog each night through Monday, reducing visibility on key roadways like I-10 and Highway 101 after 11 p.m.

Expect a slight cooldown starting Friday, with highs dipping into the low-80s but fog persisting nightly. Saturday and Sunday follow a similar pattern: sunshine by late morning, but drivers and early commuters should be cautious of foggy conditions before 11 a.m. Visibility may be limited near the coast and low-lying inland valleys.

For those spending time outdoors, limit strenuous activity during peak heat hours and monitor air quality, which remains under an active Air Quality Alert for the Los Angeles Basin. Sensitive groups should avoid prolonged exposure outside, especially during the afternoon heat.

Looking ahead, Monday and Tuesday continue the sunny-but-foggy trend, with highs near 80°F and nightly lows around 62°F. Patchy fog remains likely each evening through at least Tuesday morning

🔍 Five-Day Forecast: Los Angeles, CA

THURSDAY, JULY 10: Sunny, high near 90°F. Light wind becoming southwest 5–10 mph.
FRIDAY, JULY 11: Patchy fog before 11 a.m., then mostly sunny. High 84°F.
SATURDAY, JULY 12: Fog early, sunny later. High 81°F, low 62°F.
SUNDAY, JULY 13: Morning fog, mostly sunny afternoon. High 81°F.
MONDAY, JULY 14: Patchy fog early, then sun. High 80°F. Fog continues Monday night.