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To be considered a Clean Air Center and earn its place on the map, MacPherson said the facility must have a system with a filtration rating of at least MERV 13, which can capture at least 50% of ...
Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.
Around one-third of people in the U.S. live with unhealthy levels of air pollution, according to the American Lung Association. Wildfires are causing more short-term spikes.
A helicopter flies as the Border 2 Fire burns in the hills near the U.S.-Mexico border in the Otay Mesa neighborhood of San Diego, California, on Jan. 24, 2025.
A view of Los Angeles covered in smog. Pollution in California relates to the degree of pollution in the air, water, and land of the U.S. state of California.Pollution is defined as the addition of any substance (solid, liquid, or gas) or any form of energy (such as heat, sound, or radioactivity) to the environment at a faster rate than it can be dispersed, diluted, decomposed, recycled, or ...
Live updates: Finally 'a much needed break' for wildfire weather concerns in LA Red flag warning ends. Red flag warnings in Southern California ended on Wednesday at 6 p.m. local time in most of ...
The South Coast Air Quality Management District, also using the acronym South Coast (AQMD), formed in 1976, is the air pollution agency responsible for regulating stationary sources of air pollution in the South Coast Air Basin and the Coachella Valley portion of the Salton Sea Air Basin, in Southern California.
California policymakers and environmentalists view recent Supreme Court actions as a small victory for clean air, but worry about future legal challenges.