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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. How to understand the Air Quality Index - AOL

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

    Metro areas with a population of more than 350,000 have to report air quality data on a daily basis, while other locales simply do so as a public service. The AQI measures air quality based on ...

  5. Air quality guideline - Wikipedia

    en.wikipedia.org/wiki/Air_quality_guideline

    The WHO first released the air quality guidelines in 1987, ... (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. 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 ...

  7. 10M under winter weather alerts across Northeast and ... - AOL

    www.aol.com/10m-under-winter-weather-alerts...

    Around 10 million people are under winter weather alerts Monday in the Great Lakes and Northeast regions, where some residents may be waking up to a White Christmas.

  8. Clean Air Act (United States) - Wikipedia

    en.wikipedia.org/wiki/Clean_Air_Act_(United_States)

    The Air Quality Act of 1967 (Pub. L. 90–148) authorized planning grants to state air pollution control agencies, permitted the creation of interstate air pollution control agencies, and required HEW to define air quality regions and develop technical documentation that would allow states to set ambient air quality and pollution control ...

  9. Woodburn, Oregon - Wikipedia

    en.wikipedia.org/wiki/Woodburn,_Oregon

    Oregon routes 211, 214, 219, and 99E also serve the city, as do Union Pacific and Willamette Valley Railway freight rail lines. Woodburn is part of the Salem Metropolitan Statistical Area. With a population of 26,013 at the 2020 census, it is the third-most populous in that metropolitan area after Salem and Keizer. [5]