The Butte County Air Quality Management District is asking Chico area residents to voluntarily refrain from using their wood stoves and fireplaces today until 12:01 am Thursday morning. This due to an air quality forecast that is unhealthy for sensitive groups. 
According to a Butte County Air Quality Management District press release, wood stove and fireplace use is already restricted within Chico city limits by a city ordinance. 
For more information you can call the C-B-Y-L Hotline at 332-9409 or you can go to www.bcaqmd.org or you can also check their twitter feed.