Another round of heat is coming Wednesday after a brief respite, though San Francisco won't feel too much of it. And wildfire smoke from far Northern California could end up hazing our skies as well.

This next heat-dome-related heatwave is set to start Wednesday afternoon, with a Heat Advisory issued for much of the SF Peninsula and parts of Marin, Sonoma, and Napa counties, and an Excessive Heat Warning issued for most of the inland East Bay, Solano County, and other areas to the north and east. These take effect at 11 am Wednesday, and go through 8 pm Friday.

"We lose a few degrees today, but gain them back mid-to-late week," says the National Weather Service's Bay Area bureau. "It looks like one more peak to this heat event, then we have a better shot at normal temps by the end of this weekend!"

The weather service is warning people without adequate cooling systems who are heat sensitive to seek cooling centers or other relief during this time.

The forecasts are in the 90s to lower 100s for those in the Heat Advisory area, and up to the 110s for parts of the East Bay and elsewhere that were similar scorching last week and into the weekend.

Tuesday has seen a mostly fog-covered day for much of San Francisco, with temperatures topping out in the high 60s. The forecast only calls for a high of 73 in the city on Thursday, as that natural ocean air-conditioning continues to spare us from baking too much.

The inland East Bay especially may see an orange tinge to the sky from high-level wildfire smoke blowing down from the Shelly Fire in Siskiyou County, which has burned over 6,200 acres and is 0% contained. Even further north, in Modoc County, the North Fire has burned over 4,300 acres and is 50% contained.

The Royal Fire near Lake Tahoe has grown at a slower pace, and is now around 200 acres, up from 170 acres on Monday. It is still 0% contained.

"Most of this [smoke] is above ground level, so air quality remains in the good to moderate category mostly," says Chronicle meteorologist Anthony Edwards. "Smoke models show a bit more blowing in this evening before sunset."

Fire season is barely underway, and this doesn't bode well. Many of you will recall the infamous orange sky day that occurred in San Francisco on September 9, 2020, which occurred because of a confluence of factors including a massive amount of smoke being pushed south from multiple wildfires that were burning in Northern California and Oregon. Hopefully we won't see anything like that again this year.

Related: Royal Fire Near Lake Tahoe, Possibly Caused By Escaped Campfire, Burns 170 Acres

Photo: Cody Chan