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1. • • Air quality is similar to the weather; it can change quickly, even within a matter of hours. To measure and report on air quality, the EPA uses the United States Air Quality Index (AQI). The AQI is calculated by measuring each of the six primary air pollutants on a scale from “Good” to “Hazardous,” to produce a combined AQI numeric value 0-500.
     www.nasa.gov/general/what-is-air-quality/

     What is Air Quality? - NASA

2. 其他人也問了

   What is the Air Quality Health Index (AQHI)?

   • The Air Quality Health Index (AQHI) compiled by the Environmental Protection Department (EPD) informs the public of the short-term health risk of air pollution in Hong Kong and helps the public take precautionary measures to protect their health.

   GovHK: Air Quality Health Index

   www.gov.hk/en/residents/environment/air/aqhi.htm

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   Why is air quality important?

   • Pistone’s research covers both atmospheric and climate areas, with a focus on the effect of atmospheric particles on climate and clouds. “It’s important to understand air quality because it affects your health and how well you can live your life and go about your day,” Pistone said.

   What is Air Quality? - NASA

   www.nasa.gov/general/what-is-air-quality/

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   How is air quality measured?

   • Air quality is similar to the weather; it can change quickly, even within a matter of hours. To measure and report on air quality, the EPA uses the United States Air Quality Index (AQI). The AQI is calculated by measuring each of the six primary air pollutants on a scale from “Good” to “Hazardous,” to produce a combined AQI numeric value 0-500.

   What is Air Quality? - NASA

   www.nasa.gov/general/what-is-air-quality/

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   What is NASA Air Quality?

   • NASA What is Air Quality? Clean air is essential for healthy living, but according to the World Health Organization (WHO), almost 99% of the global population breathes air exceeding their guideline limits of air pollution.

   What is Air Quality? - NASA

   www.nasa.gov/general/what-is-air-quality/

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   Where can I find information about indoor air quality?

   • For details, please visit AQHI & Air Quality. To promote healthy indoor environments and raise public awareness of the importance of indoor air quality (IAQ), the EPD has set up an Indoor Air Quality Information Centre. The centre provides general information on IAQ as well as practical measures for improving IAQ.

   Air | Environmental Protection Department

   www.epd.gov.hk/epd/english/environmentinhk/air/air_maincontent.html

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   What does AQHI stand for?

   • It provides updates on Air Quality Health Index (AQHI) every hour, and releases annual reports on air quality. For details, please visit AQHI & Air Quality. To promote healthy indoor environments and raise public awareness of the importance of indoor air quality (IAQ), the EPD has set up an Indoor Air Quality Information Centre.

   Air | Environmental Protection Department

   www.epd.gov.hk/epd/english/environmentinhk/air/air_maincontent.html

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3. www.gov.hk › en › residentsGovHK: Air Quality Health Index - 香港政府一站通簡

   www.gov.hk › en › residents

   • 網頁紀錄

   The Air Quality Health Index (AQHI) compiled by the Environmental Protection Department (EPD) informs the public of the short-term health risk of air pollution in Hong Kong and helps the public take precautionary measures to protect their health.

   • 空气质素健康指数

     此专题文章介绍香港政府提供的空气质量健康指数（AQHI）和 ...

   • 繁體中文

     此專題文章介紹香港政府提供的空氣質量健康指數（AQHI）和 ...

4. www.epd.gov.hk › epd › tc_chi空氣質素健康指數與空氣質素 | 環境保護署 - EPD

   www.epd.gov.hk › epd › tc_chi

   • 網頁紀錄

   現時空氣質素健康指數. 空氣質素健康指數預報. 對市民的忠告. 過去24小時空氣質素健康指數. 過去24小時污染物濃度. 過去空氣質素健康指數記錄. 每月空氣質素健康指數摘要. 其他相關連結.

5. www.nasa.gov › general › what-is-air-qualityWhat is Air Quality? - NASA

   www.nasa.gov › general › what-is-air-quality

   • 網頁紀錄

   2024年10月18日 · “Air quality is a measure of how much stuff is in the air, which includes particulates and gaseous pollutants,” said Kristina Pistone, a research scientist at NASA Ames Research Center. Pistone’s research covers both atmospheric and climate areas, with a focus on the effect of atmospheric particles on climate and clouds.

6. 影片

   • 

     2:11

     youtube.com

     Air Quality Index Tutorial Part One: Intro

     2018年5月1日

     觀看次數：2221

   • 

     3:36

     youtube.com

     How we measure air quality

     2016年1月5日

     觀看次數：8.1萬

   • 

     4:17

     youtube.com

     Air Quality Index (AQI) - What It Means For You

     2017年2月9日

     觀看次數：4.5萬

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7. www.aqhi.gov.hk › en › what-is-aqhiEPD AQHI : What's AQHI

   www.aqhi.gov.hk › en › what-is-aqhi

   • 網頁紀錄

   What is the Air Quality Health Index? To provide more timely and useful air pollution information to the public, the Environmental Protection Department (EPD) launches the Air Quality Health Index (AQHI) to replace the Air Pollution Index (API) from 30 December 2013.

8. www.aqhi.gov.hk › en › what-is-aqhiEPD AQHI : FAQs

   www.aqhi.gov.hk › en › what-is-aqhi

   • 網頁紀錄

   The Air Quality Health Index (AQHI) is a health risk-based air pollution index. It provides an estimate of the short-term (hospital admission) risk of heart and respiratory diseases from air pollution.

9. www.iqair.com › hong-kongHong Kong SAR Air Quality Index (AQI) and Hong Kong SAR Air ...

   www.iqair.com › hong-kong

   • 網頁紀錄

   Because of this reduction in air quality, cases of bronchial infections and asthma has risen sharply. The average air quality index for 2019 was 96 US AQI with a PM2.5 of 33.5 µg/m³ together with significant amounts of PM10, O 3, NO 2, SO 2 and CO, according

10. www.epd.gov.hk › epd › englishAir | Environmental Protection Department

    www.epd.gov.hk › epd › english

    • 網頁紀錄

    AIR QUALITY INFORMATION The EPD monitors PM 10, NOx and other pollutants in the air. It provides updates on Air Quality Health Index (AQHI) every hour, and releases annual reports on air quality. For details, please visit AQHI & Air Quality. INDOOR AIR