Extreme Heat Alerts Stretch Across Southern California and Southwest Arizona
Forecasters warn hotter conditions later this week that could raise heat-illness risk and increase demand for cooling help.
Overview
- National Weather Service offices issued layered heat products July 10–14 with Heat Advisories now covering many inland Southern California zones and an Extreme Heat Watch in place for Tuesday through Thursday.
- NWS Phoenix issued a short-term Extreme Heat Warning for portions of southwest Arizona and adjacent southeast California on July 10 for afternoon highs of 111–115°F.
- Forecasts call for daytime highs near 100–105°F in valley areas of Southern California and 85–98°F in other advisory zones, creating high risk for heat cramps, exhaustion, and heat stroke among vulnerable people.
- Officials advise hydration, staying in air-conditioned spaces, not leaving children or pets in vehicles, and using public cooling shelters while OSHA guidance urges frequent shaded or air-conditioned breaks for outdoor workers.
- Monsoonal moisture moving in this week is expected to raise humidity and discomfort, which could make heat-related illness more likely and increase strain on local cooling resources.