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  2. Why is air quality bad today? Here's what you need to know - AOL

    www.aol.com/why-air-quality-bad-today-124844029.html

    For each pollutant an AQI value of 100 generally corresponds to an ambient air concentration that equals the level of the short-term national ambient air quality standard for protection of public ...

  3. Why air quality is worse when it's really hot - AOL

    www.aol.com/news/why-air-quality-worse-really...

    The U.S. has a measurement system for air quality called the air quality index (AQI). The AQI has six color-coded categories with a value system that runs from zero to 500.

  4. Map shows where air quality is being affected by Los Angeles ...

    www.aol.com/see-map-where-air-quality-005240210.html

    Map of AQI. var pymChild = new pym.Child(); pymChild.sendHeight(); Ways to protect your health when air quality is bad. Experts say the particles in wildfire smoke can cause headaches, irritate ...

  5. Why is the air quality bad today? 'Very unhealthy' air ... - AOL

    www.aol.com/why-air-quality-bad-today-135549984.html

    Sensitive groups in Oklahoma City should avoid outside activities today as the metro is experiencing "very unhealthy" air quality. According to the U.S. Environmental Protection Agency, air ...

  6. Southern California fire weather expected to linger. What ...

    www.aol.com/southern-california-fire-weather...

    More is known about the health effects of breathing air from burning trees and brush in wildfires, according to Keith Bein, a professional researcher at the Air Quality Research Center, at the ...

  7. New report finds air quality in Springfield, surrounding ...

    www.aol.com/report-finds-air-quality-springfield...

    The three measures of ranking for air quality in the State of the Air report are metropolitan high ozone days, 24-hour worst particle pollution of the year and worth particle pollution throughout ...

  8. Why is Ohio's air quality bad today? Here's why the ... - AOL

    www.aol.com/why-ohios-air-quality-bad-153508217.html

    As Ohio continues to swelter under a heat wave this week, the temperature and humidity is making it hard to breathe for some. Here's why.

  9. Los Angeles air quality improves after becoming 'hazardous ...

    www.aol.com/hazardous-air-quality-reported-los...

    Hazardous air quality levels are indexed at 300 or higher. As the day progressed, levels dropped from 325 to 182, improving the quality of the air to "unhealthy" rather than hazardous.

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