* WHAT. The South Coast AQMD has issued an air quality alert due to harmful levels of fine particle pollution. * WHERE. Most of Los Angeles County. Levels of particle pollution can vary by time and location depending on emissions and local weather conditions. * WHEN. 5 PM July 4th through 11:59 PM July 5th. * IMPACTS. Particle pollution can get deep into the lungs and cause serious health problems such as heart attacks, bronchitis, asthma attacks, and difficulty breathing. Everyone can be affected, but sensitive groups such as people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk.

* WHAT. Dangerous rip currents and breaking waves due to elevated surf expected. * WHERE. Catalina and Santa Barbara Islands, Ventura County Beaches, Malibu Coast and Los Angeles County Beaches. * WHEN. From Thursday morning through Saturday evening. * IMPACTS. There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can wash people off beaches and rocks, and capsize small boats nearshore. * ADDITIONAL DETAILS. This statement may be extended through Sunday evening.