The row below the Air Quality forecast shows the wind speed (in meters per second) and wind direction.

シェア '香港の大気汚染予測' - (http://aqicn.org/forecast/hongkong/)

Last updated on ???

How accurate are the forecasts? Check the correlation graphs below for PM_2.5, PM₁₀ and Ozone for the past 30 days. (Note that all values are based on the AQI, and that a maximum threshold of 300 is used).


Past month PM_2.5 AQI short-term forecast analysis.
In the above graph, the forecast is data is the forecast one day in advance (i.e. the forecast computed today for tomorrow).

There are many forecast models, for different regions of the globe - below are few of them. Just click on any of them to see the animated map for the given model.

世界

アジア

ヨーロッパ

南アメリカ

北米

Oceania

Africa

中東

中国

For a full list of all forecast model and polutants, check the forecast/model page.

Please note that all above analysis are done on the World Air Quality Index (WAQI) project own budget.
We did not receive any subsidies from any of the intuitions publishing Air Quality forecast models.

Cooperation needed!

Help is needed for keeping the world-wide Air Quality forecast model inventory up-to-date.

Do you know any model not listed below but for which gridded data is available?

Do you know better accuracy analysis solutions which should be used here?

Have you done a similar research and you would like to publish it here?

If yes, let us know your email and we will contact you asap!

The above prediction is based on composite meta model, computed using several Air Quality Forecasting Systems (AQFS):

• The Spectral Radiation-Transport Model for Aerosol Species (Sprintars) model from Kyushu University.
• The China National Air Quality forecast by Zhejiang Experts in Experimental Sciences (PM2.5科学实验专家小组).
• The Air Korea Air Quality forecast, by the Korean Integrated Air Quality forecast center(대기질 통합예보센터).
• The Copernicus Atmosphere Monitoring Service (CAMS) near-realtime surface ensemble forecast , by the ECMWF.
• The System for Integrated modeLling of Atmospheric coMposition (SILAM) by the FMI.
• The Max Planck Institut fur Meteorologie (MPIM) model.
• The Ozone Air Quality Model (AQM) by the NOAA/NCEP.
• The Regional Air Quality Deterministic Prediction System (RAQDPS) model from the Government of Canada.
• The irCELine (Belgian Interregional Environment Agency) for the Belgian Regions.
• The LCSQA (Laboratoire Central de Surveillance de la Qualité de l’Air) for France.
• The RIVM (Rijksinstituut voor Volksgezondheid en Milieu) for the Netherlands.
• The SILAM (System for Integrated modeLling of Atmospheric coMposition) for Northen Europe.
• The EURAD (EURopean Air Pollution Dispersion) for Central Europe.

The above map is based on the PM_2.5 surface level modeling, and colors are following the US EPA AQI standard.

This forecasting model, and all AQFS which it is based on, are research products intended to provide information related to Air Quality forecast. All reasonable measures have been taken to ensure its quality and accuracy. However:

• We do not make warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, correctness, completeness of the information.
• We do not assume any legal liability or responsibility for any damage or loss that may directly or indirectly result from any information contained on this website or any actions taken as a result of the content of this website;
• We may change, delete, add to, or otherwise amend information contained on this website without notice

For more information about the underlying concepts of Air Quality forecasting (or Atmospheric Dispertion Modeling), check the article on a visual study of wind impact of PM_2.5 concentration.

大気汚染レベルについて

指数	大気質指数の分類(米国）	健康影響 / カテゴリ	粒子状物質(PM10,PM2.5)
0 - 50	良い - Good	通常の活動が可能	なし
51 -100	並 - Moderate	特に敏感な者は、長時間又は激しい屋外活動の減少を検討	非常に敏感な人は、長時間または激しい活動を減らすよう検討する必要がある。
101-150	敏感なグループにとっては健康に良くない - Unhealthy for Sensitive Groups	心臓・肺疾患患者、高齢者及び子供は、長時間又は激しい屋外活動を減少	心疾患や肺疾患を持つ人、高齢者、子供は、長時間または激しい活動を減らす必要がある。
151-200	健康に良くない - Unhealthy	上記の者は、長時間又は激しい屋外活動を中止 すべての者は、長時間又は激しい屋外活動を減少	心疾患や肺疾患を持つ人、高齢者、子供は、長時間または激しい活動を中止する必要がある。それ以外の人でも、長時間または激しい活動を減らす必要がある。
201-300	極めて健康に良くない - Very Unhealthy	上記の者は、すべての屋外活動を中止 すべての者は、長時間又は激しい屋外活動を中止	心疾患や肺疾患を持つ人、高齢者、子供は、全ての屋外活動を中止する必要がある。それ以外の人でも、長時間または激しい活動を中止する必要がある。
300+	危険 - Hazardous	上記の者は、屋内に留まり、体力消耗を避ける すべての者は、屋外活動を中止	全ての人が屋外活動を中止する必要がある。特に、心疾患や肺疾患を持つ人、高齢者、子供は、屋内に留まって激しい活動を避け静かに過ごす必要がある。

(Reference: see wikipedia, and cn.emb-japan.go.jp/)

大気汚染についての更なる詳細をお知りになりたい方は、WikipediaやAirNowを参照してください。

北京在住の医師Richard Saint Cyr氏による大変役に立つ健康上のアドバイスは、 www.myhealthbeijing.com をご覧ください。