SAN FRANCISCO (KGO) -- Hazy and smoky skies returned to the Bay Area Sunday due to the Glass Fire that sparked overnight in Napa County.
ABC7 meteorologist Drew Tuma says most areas are reporting moderate air quality Sunday evening that is expected to decline on Monday.
Monday will feature moderate to poor air quality across the Bay Area which has prompted a Spare the Air day.
ABC7's Lisa Argen says smoke from that wildfire is moving to the southeast.
Strong northeasterly winds are pushing smoke towards the town of St. Helena and across Highway 29 and 12 in the direction of the towns of Penngrove & Forest Knolls.
The smoke then is being steered offshore by Inverness. Air quality is deteriorating in the North Bay while smoke from the August Complex Fire is also being transported South.
Gusty offshore winds will continue mainly above 1,000 feet through Monday evening.
A Red Flag Warning for the hills and valleys of the North and East Bay continues through 9 p.m. Monday.
A Heat Advisory has been issued for the rest of the Bay Area excluding the San Francisco peninsula and county through 7 p.m. Monday.
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