Downtown Los Angeles is starting Tuesday, June 23, in full "June gloom" mode, with muggy, patchy coastal fog hanging on through the morning and temperatures hovering around 63°F. The gray skies will not last all day, though. Forecasters say the fog should thin out by midday, giving way to a mostly sunny afternoon with a high near 83°F, and humidity that will make it feel a bit hotter than the thermometer suggests. A Heat Advisory is in place for parts of the inland coast through Thursday, and air-quality alerts are still active for some neighborhoods, so it is a good day to have an indoor backup plan for any outdoor activities.
Heat Advisory Through Thursday
The National Weather Service has issued a Heat Advisory for the Los Angeles County inland coast, including Downtown LA, from 8 AM Tuesday, June 23, through 9 PM Thursday, June 25, according to NWS Los Angeles/Oxnard. Humid afternoons are expected to push apparent temperatures into the mid-to-upper 80s, with Wednesday shaping up as the hottest day in the stretch. Officials are urging residents to drink plenty of fluids, steer clear of prolonged time in direct sun, and dial back strenuous outdoor activity during the peak afternoon hours.
Foggy Mornings, Sunny Afternoons
A shallow marine layer is keeping things cool and foggy along the coast in the morning, then gradually breaking up by late morning as skies turn sunnier inland. Coastal neighborhoods will stay the cooler, breezier side of the forecast while the basin and valleys climb into the low-to-mid 80s. Expect some reduced visibility early on, so give yourself a little extra commute time if you are driving through the thicker patches of fog.
Air Quality Alert For Parts Of The County
The South Coast Air Quality Management District has extended an air-quality alert for fine particle pollution affecting parts of the San Gabriel Valley, Downtown, and East Los Angeles, according to South Coast AQMD. People with heart or lung disease, older adults, pregnant people, and children are urged to limit prolonged outdoor exertion and to check the local AQI before planning time outside.
What To Do Today
If you are heading out, bring water to any outdoor event, opt for air-conditioned spots when you can, and try to shift workouts or other strenuous activities to the early morning or evening. Watch for signs of heat exhaustion, including heavy sweating, weakness, dizziness, or nausea. If someone shows these symptoms, move them to a cool place and seek medical help if their condition does not improve or gets worse.
Looking Ahead
Wednesday is expected to be the peak of the heat, with downtown highs likely landing a few degrees above today’s forecast before conditions start to ease late Thursday as onshore flow strengthens. By the weekend, temperatures are forecast to settle back into the 70s, setting up more comfortable afternoons on Saturday and Sunday.
