If you work outside, use a mask rated N95 or better which can be found at most hardware stores. Not all masks will fend off small particles from smoke, so do your research.Here's a link to N95 masks on Amazon, and they also are sold at Home Depot, sold at Harbor Freight, and sold at Ace Hardware, among other stores. If you are unsure if a mask is rated N95, look for the fine print on the inside or outside of the mask, or check with the place where you received it. Most N95-rated masks will be marked on the outside of the mask. Read MoreUse an air filter at home that is rated is MERV 13 or higher.CLICK HERE to see a real-time air quality map from the State of Washington Department of Ecology. How to protect yourself during smoke days Smoke from brush fire near Maple Valley shuts down WB Highway 18 for hoursWildfire smoke causing flight delays at Sea-Tac Airport When will smoke clear in Seattle? KIRO 7 PinPoint Meteorologist weighs in Do you have an investigative story tip? Send us an email at investigate@kiro7.com DOWNLOAD OUR FREE NEWS APP