The fireworks might be over, but the dust from the Fourth of July has yet to settle.

With sweltering temperatures expected to heat up the Santa Clarita Valley this week, today's air quality for the Santa Clarita Valley was listed as unhealthy, according to the South Coast Air Quality Management District.

Officials advise anyone with heart disease, asthma or other respiratory disease to minimize outdoor activities throughout the day.

Also, children with sensitive conditions attending school or a summer camp today should not participate in any outdoor physical activity and are urged to stay indoors as much as possible. Sensitive conditions include heart disease, asthma, other chronic respiratory diseases, according to the county Department of Public Health.

If the air remains unhealthful throughout the week, then the South Coast Air Quality Management District will continue to issue air quality alerts.