How to Protect Yourself From Wildfire Smoke

Several rapidly spreading wildfires in Southern California have generated unhealthy levels of smoke in areas close to where the blazes are burning. And millions of people across Southern California are also under an excessive heat warning. Here’s how people can stay safe.

The New York Times publishes maps that track air quality and wildfire smoke nationwide. AirNow.Gov and Fire.AirNow.Gov also show the air quality index in a given area, which can help you determine if you should limit the amount of time you spend outdoors. Air Quality Index values above 100 mean that outdoor air may be unsafe for people who are at higher risk of getting sick. Levels over 200 are considered “very unhealthy.”

Smoke can exacerbate the symptoms of respiratory conditions like asthma and chronic obstructive pulmonary disease. If you have these conditions, you may want to be especially cautious when the air is smoky. People with other chronic conditions, like diabetes, chronic kidney disease and heart disease, also have a higher risk of getting sick from inhaling smoke, according to the Centers for Disease Control and Prevention. Children and pregnant women may also be at risk, according to the agency.

But anyone can feel the effects of wildfire smoke. Inhaling it can immediately cause coughing and wheezing, a headache, stinging eyes, a scratchy throat, sinus irritation, chest pain, a rapid heartbeat and fatigue.

You should stay inside as much as possible, particularly if you are at higher risk of illness. If you need to go outside, wear a high-quality, tightfitting mask, like an N95. This can help filter out tiny particles from the smoke, said Laura Corlin, an associate professor of public health and community medicine at Tufts University School of Medicine.

If you’re able to stay inside, “you definitely want to try to make your indoor environment as smoke free as possible,” said Dr. Corlin. That means making sure windows are tightly shut. Run an air purifier if you have one. If you do not, turning on the air conditioning can help. But if you have a central air system that takes in air from outside, close the outside air damper, or switch the system to recirculate mode, so that you are not pulling air that is tainted with smoke into your home. While less effective than air conditioning, fans can also be useful in circulating air — turn them onto their highest setting.

Parts of California are also under an excessive heat warning, which could potentially worsen the effects of wildfire smoke in some high-risk individuals, and also carries its own health risks. It’s critical to stay hydrated, Dr. Corlin stressed. To cool down quickly, you can also apply some water to your wrists or the back of your neck. Watch out for signs of heat stroke, which include a body temperature of 103 degrees or higher, dizziness, headaches, nausea, confusion, fainting and red, dry or damp skin. If you or someone near you experiences those symptoms, seek medical attention immediately.

Some complications from wildfire smoke can take several days to emerge, Dr. Corlin said, including heart issues and strokes. Stay alert to possible problems for a week or so after you are exposed, paying particular attention to any symptoms like chest pain or an elevated heart rate.


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