"Although a wildfire may be burning miles away and you live in a cityscape, chances are, you could still be impacted by the wildfire. The most direct effect is smoke.
To decrease your risk from wildfire smoke, check local air quality reports (EPA's AQI, for example), keep windows and doors closed, stay well-hydrated, limit outdoor activities, and if necessary, wear a "N95" mask. Regular dust masks won't protect your lungs from the small particles that stem from a wildfire. Also, if you wear contact lenses, switch to eyeglasses.
From the Source:
"The King Fire that has sent smoke into the Truckee Meadows all week has blown up overnight to an estimated 70,944 acres.
The size of the fire combined with the winds not dying down as expected contributed to Truckee Meadows air quality reaching a level of very unhealthy, said National Weather Service meteorologist Chris Smallcomb."
Above: "Setting sun viewed through smoke as it is starting to blow into Reno from the west on Wednesday evening. The smoke is from the King Fire in California on Wednesday, Sept. 17, 2014." Credit - Terry Dee