* WHAT...The South Coast AQMD has issued an air quality alert due to harmful levels of windblown dust and ash.

* WHERE...in the South Coast Air Basin. Pollution levels can vary by time and location depending on emissions and local weather conditions.

* WHEN...10 AM Monday through 10 PM Tuesday.

* IMPACTS...Particle pollution can get deep into the lungs and cause serious health problems such as asthma attacks, heart and lung disease symptoms, and increased risk of respiratory infections. 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.