Health Threats Posed By Leaf Blowers

Perhaps most worrisome, the leaf blower's gas engines release high concentrations of microscopic ultrafine particles, as recently confirmed in tests commissioned by FairWarning. Ultrafine particles are unregulated, but scientists increasingly believe they are a serious danger. That threat is particularly true for landscaping workers, but also a potential concern for other adults and children who are exposed. Ultrafine particles are 0.1 of a micron, or roughly one-thousandth the width of a human hair.
In one instance, ultrafine particle levels around an 11-year-old leaf blower were 50 times higher than at a nearby clogged intersection at rush hour. In the same round of tests, with a 2017 model leaf blower, the ultrafine particle level was more than 40 times higher than at the busy intersection.
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