Center for Clean Air

Air for disadvantaged L.A. residents is more polluted, more toxic

Levels and sources of contamination vary by location, UCLA-led study finds

Simulations show how city building configurations affect pedestrians’ air quality

Pollution at street level is worst with buildings in tight rows, UCLA study finds

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Suzanne Paulson in Newsweek: Air Pollution From California Wildfires in Some Regions ‘Unprecedented’

Air pollution from the California wildfires is spreading across the state, with hazardous levels being recorded in many regions. In several areas the Air Quality Index showed regions where pollution…

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Yifang Zhu and Suzanne Paulson in The Daily Bruin: UCLA experts show LA air quality has improved, but encourage thinking long-term

A decrease in Southern California traffic led to decreases in microscopic air pollutants known as fine particulate matter, or PM 2.5. This contributed to a 20% improvement in air quality…

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Yifang Zhu Quoted in UCLA Newsroom: Planning a Trip Abroad? Before you Pack, Check the Air Pollution Levels

“Los Angeles used to be nearly as polluted as Beijing is today,” said Yifang Zhu, co-lead author of the study and professor of environmental health sciences at the Fielding School.…

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Yifang Zhu in One Zero: Startup Molekule Is Using the California Wildfires to Sell Its Crummy Air Purifier

As a technology, air purifiers land somewhere between legitimate health device and dubious wellness product. Many health researchers suggest that certain purifiers can reduce harmful airborne pollutants. “I recommend that…