Air quality in Southern California was mostly good Monday morning, but don't expect that to last.

Along with an incoming heat wave that will envelop much of the Southland, portions of the Inland Empire will also experience worsening air quality, according to the South Coast Air Quality Management District.

In a forecast for Monday, air quality that's unhealthy for everyone is expected in the San Bernardino National Forest north of Highland, including the area around Lake Arrowhead, and in Redlands, Loma Linda and Yucaipa.

Air that's unhealthy for sensitive groups is expected throughout much of the rest of the I.E., as well as in Arcadia, Glendora, El Monte and Covina.

"I can almost guarantee you it's going to get much worse over the coming days because of that high-pressure system buil

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