The National Weather Service warns that hot conditions over 100 degrees will be present for the San Diego County Valleys today until Saturday, 7/22/23 at 8 p. m. Stay inside or in shaded areas. Drink lots of water. If you feel sick from the heat, call 9-1-1. Never leave young children or pets alone in vehicles. Find a cool place to go and tips to beat the heat at www.coolzones.org Visit the National Weather Service at www.weather.gov/sgx/ for more information, updates, and a map.