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  2. Woodburn, OR Weather - Hourly Forecasts and Local Weather ...

    www.aol.com/weather/forecast/us/woodburn-12798454

    Get the Woodburn, OR local weather forecast by the hour and the next 10 days.

  3. As the fires continue to smolder, what is the air quality ...

    www.aol.com/news/fires-continue-smolder-air...

    On Friday, the South Coast Air Quality Management District issued a smoke advisory for the fourth consecutive day, largely due to the elevated levels of unhealthy pollution billowing from the ...

  4. 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 ...

  5. List of most-polluted cities by particulate matter concentration

    en.wikipedia.org/wiki/List_of_most-polluted...

    The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter (PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively). [1 ...

  6. Weatherscan - Wikipedia

    en.wikipedia.org/wiki/Weatherscan

    Air Quality Forecast (2003 ... area over the course of 10 hours (each time interval, between 6:00 a.m. and 8:00 p.m. local time, was separated by two hours), weather ...

  7. Woodburn, IN Weather - Hourly Forecasts and Local Weather ...

    www.aol.com/weather/forecast/united-states/...

    Get the Woodburn, IN local weather forecast by the hour and the next 10 days.

  8. Air quality guideline - Wikipedia

    en.wikipedia.org/wiki/Air_quality_guideline

    The guidelines stipulate that PM 2.5 should not exceed 5 μg/m 3 annual mean, or 15 μg/m 3 24-hour mean; and that PM 10 should not exceed 15 μg/m 3 annual mean, or 45 μg/m 3 24-hour mean. [2] For ozone (O 3 ), the guidelines suggest values no higher than 100 μg/m 3 for an 8-hour mean and 60 μg/m 3 peak season mean. [ 2 ]

  9. How to understand the Air Quality Index - AOL

    www.aol.com/news/how-to-understand-the-air...

    At the time of writing, some areas of New York, Pennsylvania and Ontario are at a code maroon and have hazardous air quality, according to the EPA. Many other regions are under red and purple alerts.