Air quality has worsened for most of northern California as a lot of the smoke from our area fires as settled over the valley and foothills. We can expect more hazy, smoky sunshine on Tuesday with light to moderate breezes as autumn begins. Tonight will be a mostly clear to clear night with more areas of smoke and haze. Lows will range from the 30s and 40s in the mountains to the 50s and 60s in the foothills and valley. Tuesday will be a mostly sunny, breezy and hazy day with similar temperatures to today. Highs will range from the upper 70s to the lower 90s, but most areas will have highs in the 80s.
As one small trough of low pressure exits our region late Tuesday, a deeper trough of low pressure will sag over the Pacific Northwest and northern California during the second half of the week. Although there is a slight chance for mountain showers, little rain will fall over our part of the state. We can expect a few more clouds and stronger breezes from Wednesday through Friday as that trough of low pressure leaves. A large ridge of high pressure will build over California this weekend and early next week. Hotter weather with some wind and fire danger are possible through Monday. Highs will be in the 80s and 90s.