air quality index, California

After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free ...
The Air Quality Index, or AQI, is the primary system used to warn the public when air pollution is dangerous. It’s based on ...
Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily ...
Air quality in wildfire-stricken Los Angeles improved on Thursday from hazardous peaks hit earlier this month, as tiny soot ...