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California air quality has improved in last decade

According to a report released by a state association of regional air district officers, California air pollution reached unhealthy levels less often in 2011 than a decade prior, reports ABC KGO-TV San Francisco. The report shows that 2011 had 74 percent fewer days of “unhealthy air” across the state compared to 2000.

"We recognize that we have a long way to go in some of these air districts, but we have made a lot of progress," said Kenneth Koyama, executive director of the California Air Pollution Control Officers Association, which published the report. "Some districts have gone down to one unhealthy day in the past year for air-quality purposes, and others have actually had zero unhealthy days."

However, while unhealthy air pollution levels have decreased significantly in the past decade, many California cities feature poor air quality. Homeowners concerned about the negative health impacts of air pollution can invest in a home air purifier. Units such as the IQAir HealthPro Plus HEPA Air Purifier can reduce long-term exposure to toxins that are known to irritate respiratory illnesses such as asthma, decrease lung function, increase the risk of heart attack or stroke and even cancer.