The association between PM2.5 and heart and lung health effects is well documented in scientific literature. They are small enough to get deep into the lungs and the tiniest, ultrafine particles can pass directly into the bloodstream. Particles from smoke tend to be very small (with diameters of 2.5 micrometers and smaller).
Particulate matter (PM) is the principal pollutant of concern from wildfire smoke for the relatively short-term exposures (hours to weeks) typically experienced by the public. Wildfires produce a range of harmful air pollutants, from known cancer-causing substances to tiny particles that can aggravate existing health problems and increase the risk of heart attack or stroke. Check with your local air district for the latest information specific to your community.For mobile devices, access air quality information for more than 150 California locations using BreatheWell.Forest Service Wildland Fire Air Quality Response Program For near real-time updates on air quality and smoke near you, visit the AirNow Fire and Smoke Map or the U.S.There are several steps you can take now to keep your family safe before and during wildfire season. Large wildfires often produce intense smoke that can pose serious health risks. Pets also can be affected by unhealthy air and should be brought indoors, if possible.Ĭalifornia has experienced some of the most destructive wildfire seasons in recent years. Even healthy people may experience symptoms in smoky conditions or after exposure. These sensitive groups are advised to limit outdoor activities, especially when the Air Quality Index (AQI) reaches levels considered ‘Unhealthy for Sensitive Groups’ or above. Wildfire smoke – a complex mixture of air pollutants – is unhealthy to breathe and can be especially dangerous for children, the elderly, pregnant women and people with heart or respiratory conditions. California is facing increasingly catastrophic wildfire seasons.
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