Second day of poor air quality warnings for Santa Clarita Valley

For the second day in a row, public health officials are warning people with respiratory problems in the Santa Clarita Valley to minimize their outdoor activity due to poor air quality.

In an advisory issued today, Los Angeles County Department of Public Health officials said unhealthy air warning applied to those with heart disease, asthma or others who suffer from respiratory issues.

Students with similar conditions should also not participate in physical activity and stay indoors as much as possible, according to the advisory.

The warnings come as the Santa Clarita Valley was forecast to experience its second day of 90-degree weather today as a high-pressure system continues to build, according to the National Weather Service.

Daytime highs could also hit the lower-90s in the Glendale and Pasadena areas before a regional cool down begins Thursday, pushing temperatures back down in the mid-70s to low-80s through the weekend.

-- Jason Wells, Times Community News

Twitter: @JasonBretWells