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

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

    Get the Woodburn, OR local weather forecast by the hour and the next 10 days. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways ...

  3. 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 ...

  4. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    An air quality index (AQI) is an indicator developed by government agencies [1] ... 8 hours 9 ppm Nitrogen dioxide 1 hour 0.12 ppm 1 year 0.03 ppm Ozone

  5. Air quality guideline - Wikipedia

    en.wikipedia.org/wiki/Air_quality_guideline

    Air quality guideline. 1 language. ... For nitrogen dioxide (NO 2), the guidelines set 10 μg/m 3 for the annual mean or 25 μg/m 3 for a 24-hours mean. [2]

  6. How to understand the Air Quality Index - AOL

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

    A woman jogs with a dog along the Hudson River shortly after sunrise, as haze and smoke caused by wildfires in Canada hang over the Manhattan skyline, in New York City, New York, U.S., June 7, 2023.

  7. National Ambient Air Quality Standards - Wikipedia

    en.wikipedia.org/wiki/National_Ambient_Air...

    These sections require the EPA "(1) to list widespread air pollutants that reasonably may be expected to endanger public health or welfare; (2) to issue air quality criteria for them that assess the latest available scientific information on nature and effects of ambient exposure to them; (3) to set primary NAAQS to protect human health with ...

  8. Air pollution measurement - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_measurement

    Recently, drive-by air pollution sensing systems have emerged as a promising approach for air quality monitoring, utilizing sensors mounted on taxis, buses, trams, and other vehicles. [26] In particular, buses have garnered considerable attention as a mobile sensing platform due to their widespread availability and extensive geographical coverage.

  9. Man in critical condition after being pushed onto New York ...

    www.aol.com/man-critical-condition-being-pushed...

    A man was left in critical but stable condition after he was pushed onto the subway tracks at the 18th Street station in Manhattan's Chelsea neighborhood. The 45 -year-old victim was pushed onto ...