the 36th annual fog fest as well, acros the area people headed out to the beach for california coasta cleanup day. >> the bay area management district said we are almost through this rough stretch. they do not anticipate another spare the air day coming anytim soon. the number of days of poor air quality does have a compounding effect. >> be in a polluted area is equivalent of smoking a full pack of cigarettes per day and that gives you some idea of the long-term risks over time. ove a season this can have a impact but within four days no more than a cute effects. >>> for those votes in san francisco we can breathe deeply we have good air quality. the first time in a while. i will show you how it plays out. we are going to the camera on top of mount diablo. you do not want to open the windows in concord just yet. the reading out there is moderate and even on the low-cost sensors they are still reading risks for sensitive groups. let's put th map up. there is about a dozen sensors, they are probably the most trusted source but often times if you want more nuance you can look at the pur