Unusual May heat strikes Southern California
Southern California is currently facing an intense and unseasonal heat wave, prompting the National Weather Service (NWS) in Los Angeles to issue an urgent heat advisory. This warning, in effect from Tuesday at 11 a.m. to Thursday at 9 p.m., highlights temperatures soaring past 100°F (38°C) across multiple valleys, mountain ranges, and inland areas.
According to Ryan Kittell, a meteorologist with NWS Los Angeles, the region is experiencing temperatures 10 to 15 degrees above normal for late May. Typical highs this time of year usually range between 70°F and 83°F (21°C to 28°C), but this week’s readings are exceeding that—especially in the San Fernando Valley, Ojai Valley, and Santa Ynez Mountains.
Extreme heat threatens pet safety
With such extreme temperatures, the NWS is also warning the public to not leave pets in vehicles, even for a few minutes. Heat inside closed cars can rapidly escalate, turning lethal for animals. The American Society for the Prevention of Cruelty to Animals (ASPCA) reiterates this warning, urging pet owners to recognize early signs of overheating, such as:
Excessive panting, difficulty breathing, elevated heart rate, drooling, weakness, or collapse. More severe symptoms may include seizures, bloody diarrhea, vomiting, and body temperatures above 104°F (40°C).
Additionally, hot asphalt poses a serious risk. Pets walking on scalding pavement risk burns to their paws, especially during midday and afternoon hours.
Communities under heat advisory
The areas most affected by the heat include:
Calabasas, Agoura Hills, the Eastern and Western San Fernando Valley, Santa Clarita Valley, Santa Ynez Valley, Lake Casitas, Ojai Valley, Santa Barbara County Interior Mountains, San Gabriel Valley, and Downtown Los Angeles. These locations are expected to endure persistent, high-risk heat until at least Thursday evening.
Fire and health concerns add to alert
The extended hot spell has increased the risk of wildfires, particularly in grassy areas away from the coast. According to NWS Los Angeles, there’s a moderate risk of heat-related illness, particularly for sensitive groups, people without air conditioning, and those engaged in outdoor labor or recreation.
Meteorologists are strongly urging residents to limit outdoor activity between 10 a.m. and 6 p.m., stay hydrated, and avoid direct sun exposure. These precautions are vital not just for people, but for the well-being of pets, who are just as vulnerable to heat stroke.
Looking ahead: more heat likely
While the worst of the current heat wave is expected to wane after Thursday night, the NWS Climate Prediction Center has indicated a slight chance of continued above-average temperatures throughout California for the rest of May, particularly from May 25 to May 29.
Stay alert to updates from NWS Los Angeles, especially if you reside in inland or mountainous areas, where temperatures could spike again and fire danger remains elevated.
