According to the forecast, smoke in the Foothills will diminish throughout the day. No relief for the Tahoe Basin, smoke from the Caldor Fire continues to render air quality hazardous.

https://yubanet.com/wp-content/uploads/2021/08/0824.mp4
This is an experimental smoke forecast model and may not be available at all times.  It is also NOT an official air quality forecast.  The official Air Quality forecast for California can be found here:  AirNow (fire.airnow.gov)