Get Real-Time Smoke Reports From the California Wildfires Using These Maps
by Emily Price from Lifehacker on (#42P5B)

In addition to the obvious fire danger, all three fires are creating a substantial amount of smoke that can pose a health and safety risk to those who live nearby, even when that "nearby" in a few hundred miles from where the fire is burning. In San Francisco, for instance, the smoke smell is overwhelming at points"