Excessive heat warnings (pink) are in effect for most areas 11AM Wed into 8PM Fri. Heat advisories have been added for coastal areas in orange, in effect from 11AM Thurs-8PM Fri. Plan to avoid the heat if possible. Limit outdoor times during peak heating & stay hydrated. #CAheat

Elevated-brief critical fire weather conditions thru Fri for SW Calif due to very hot/dry conditions/locally gusty winds/dry fuels. Increased risk for large fires with large vertical plume growth/erratic fire behavior, esp mtns/foothills. Photo-Stephen Coleman #LAWeather #cawx

Rounds of #sundowner winds for southern Santa Barbara Co thru Fri night. Increased fire threat late Thu-Fri night: wind gusts of 25-40 mph combine w/temps 90-100 deg+RH down to 15%, causing brief criticial fire wx conditions in Santa Ynez mtns+adjacent foothills. #cawx #firewx

Temps peak Wed-Fri this week, bringing moderate to high heat impacts. The homeless, elderly, children, and those with health issues are at the highest risk for heat illness. Daytime highs between 95 to 105 will become common away from the coast. #CAwx #LAheat

A heat wave is likely Tuesday through Friday with moderate to high heat impacts likely away from the coast. Never leave anyone alone in a closed car. Drink plenty of water and limit strenuous outdoor activities. #LAWeather #cawx

#HEATWAVE OZONE ADVISORY (Tuesday, September 3 - Friday, September 6): elevated smog levels expected as high temperatures are predicted to persist through the week: aqmd.gov/advisory

#AirQuality Forecast (Wed., Sept. 4): AQI readings in portions of the #InlandEmpire, #OrangeCounty, and #LosAngeles County are predicted to reach Unhealthy for Sensitive Groups or higher levels. For the Current #AQI and additional forecasting info, visit aqmd.gov/forecast

A heat wave is likely through at least Saturday with moderate to high heat impacts likely away from the immediate coast. Never leave anyone alone in a closed car. Drink plenty of water and limit strenuous outdoor activities. #LAWeather #cawx

Hot temps this week, bringing high heat impacts. The homeless, elderly, children, and those with health issues are at the highest risk for heat illness. Daytime highs between 95 to 105 will become common away from the coast. #CAwx #LAheat

Don't be fooled! Even if temps are in the 80s at the trailhead, temps will rapidly increase as you climb in elevation. Many mountains/hills will reach highs of 95-112 thru Sat. These are UNSAFE conditions. Even experienced hikers should postpone hikes to a cooler day. #Cawx #heat

It's extremely hot out there already at 10am! Outdoor activities are strongly discouraged. Even in the mountains. #LAHeat #CAwx

#RedFlagWarning now in effect for southern #SantaBarbara County and most mountains thru Sat. The environment is ripe for any new fires to grow fast and behave erratically. Avoid using anything that can spark a fire. Be SET to evacuate if you live in a high fire risk area. #cawx

It will extremely hot through the weekend. Heat illness is a real thing and should be taken seriously. There is no more dangerous place than in a car. #cawx

It is currently 96 at Downtown #LosAngeles - and should approach 100 degrees for the day. Here are some climate tidbits: Hottest so far in 2024: 97 on Aug 20 Last time it hit 100+: Sept 4, 2022 (it was 103) The record for Sep 5 is 105 set in 1984. #cawx

Hikers! ...don't be fooled by cooler trailheads, as temperatures rapidly increase with elevation gain. Look at this current temperature map of the #SantaBarbara area for example, as temperatures climb from 71 to 101 in a distance of 2 miles. High risk for heat illness exists.

With a high temperature of 114° at #Burbank Airport, an all-time #wxrecord high temperature was tied for today. This was last set on three different dates: 7/6/2018, 9/5/2020, and 9/6/2020. (photo courtesy of NOAA). #LAHeat #CAwx Hollywood Burbank ✈️

If you live in the foothills, it was a warm night. Some locations have only seen low temps dip down into the 90s, so far. You can find this map on our website (weather.gov/lox), then click on Observations under the Current Conditions menu. #LAHeat #CAwx

It was an extremely warm night across the Southland. Some areas in the Santa Monica Mountains didn't drop below 95°!! Please take care of yourselves and avoid any strenuous activities during this extreme heat wave. #LAHeat #CAwx