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  2. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    An air quality index (AQI) is an indicator developed by government agencies [1] to communicate to the public how polluted the air currently is or how polluted it is forecast to become. [ 2 ] [ 3 ] As air pollution levels rise, so does the AQI, along with the associated public health risk.

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  4. Pollution in California - Wikipedia

    en.wikipedia.org/wiki/Pollution_in_California

    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 ...

  5. Los Angeles gets 'F' grade for air quality once again in ...

    www.aol.com/news/los-angeles-gets-f-grade...

    Around 38.5 million California residents live in a county that received a failing grade in the Lung Assn.'s annual "State of the Air" report.

  6. 'Volatile conditions' prompt red flag warnings across ...

    www.aol.com/volatile-conditions-prompt-red-flag...

    The warnings are in effect from Monday through Wednesday night as damaging Santa Ana winds with gusts up to 40 to 65 mph will blow through, according to the National Weather Service in Los Angeles.

  7. South Coast Air Quality Management District - Wikipedia

    en.wikipedia.org/wiki/South_Coast_Air_Quality...

    The South Coast AQMD includes all of Orange County; and the non-desert regions of Los Angeles County, San Bernardino County, and Riverside County including the Coachella Valley. The South Coast Air Basin area encompassed by the South Coast AQMD amounts to about 10,750 square miles (27,850 square kilometres) and is the second most populated area ...

  8. Red flag warning across Southern California as Santa Ana ...

    www.aol.com/news/red-flag-warning-across...

    Red flag warnings are in place Monday from 10 a.m. through Wednesday 6 p.m. local time for the San Gabriel Mountains, Santa Monica Mountains, Santa Clarita Valley, Ventura County coasts and ...

  9. NowCast (air quality index) - Wikipedia

    en.wikipedia.org/wiki/NowCast_(air_quality_index)

    PM 2.5 AQI of US monitors, calculated utilizing NowCast, courtesy US EPA PM2.5 AQI map, calculated utilizing NowCast, courtesy US EPA. The PM (particulate matter) NowCast is a weighted average of hourly air monitoring data used by the United States Environmental Protection Agency (USEPA) for real-time reporting of the Air Quality Index (AQI) for PM (PM 10 - particles less than 10 micrometers ...