Air Quality Forecasting - also refered as 'Atmospheric Dispersion Modeling' (wikipedia) is the art of simulating how air pollutants (eg PM_2.5 or Ozone) disperse is the ambient atmosphere. The result of the simulation gives the ambient concentration for each air pollutants, from which the Air Quality Index can be calculated.

There are dozens of dispertion models, and many universities and institutions arround the world are running one or several of them for different regions (eg Europe, Continental US, Asia ...). Below is the a non-exaustive and selected list of few models which are beeing used for providing Air Quality forecast on the "World Air Quality Index" project.

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You can click on any of the forecast map to see the real-time forecast animation, as well as the model efficiency analysis.

SPRINTARS Asia
Spectral Radiation-Transport Model for Aerosol Species

SPRINTARS East Asia
Spectral Radiation-Transport Model for Aerosol Species

MPIM China
Max Planck Institut fur Meteorologie

SILAM Asia
System for Integrated modeLling of Atmospheric coMposition

CAMS Asia / Panda
Copernicus Atmosphere Monitoring Service NRT

CAMS Europe
Copernicus Atmosphere Monitoring Service NRT

EMEP Europe
European Monitoring and Evaluation Program

CAMS World
Copernicus Atmosphere Monitoring Service NRT

SILAM World
System for Integrated modeLling of Atmospheric coMposition

NGAC
NOAA NEMS GFS Aerosol Component

GFS
Global Forecast System

NCEP EMP AQM
Air Quality Model (AQM) Product

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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.

Detailled Air Quality Forecast is available for more than 600 cities: Or just pick any of those cities: Пекин, Шанхай, Чэнду, Шэньян, Шэньчжэнь, Кантон, Циндао, Сиань, Тяньцзинь, Саитама, Киото, Осака, Сеул, Пусан, Богота, Дели, Джакарта, Ulaanbaatar, Ханой, Ченнаи, Колката, Мумбаи, Хайдарабад, Сантьяго, Лима, Сан-Паулу, Кито, Сингапур, Куала-Лумпур, Ipoh, Perai, Мири, Нью-Йорк, Seattle, Чикаго, Бостон, Atlanta.

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.

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.

О уровнях качества воздуха

-	Индекс качества воздуха (ИКВ = AQI) Значения	Уровни концерна здравоохранения
0 - 50	хорошо	Качество воздуха считается удовлетворительным, и загрязнение воздуха представляется незначительным в пределах нормы.
51 -100	удовлетворительное	Качество воздуха является приемлемым; однако некоторые загрязнители могут представлять опасность для людей, являющихся особо чувствительным к загрязнению воздуха.
101-150	Нездоровый для чувствительных групп	Может оказывать эффект на особо чувствительную группу лиц. На среднего представителя не оказывает видимого воздействия.
151-200	нездоровый	Каждый может начать испытывать последствия для своего здоровья; особо чувствительные люди могут испытывать более серьезные последствия.
201-300	Очень Нездоровый	Опасность для здоровья от чрезвычайных условий. Это отразится, вероятно, на всем населении.
300+	опасный	Опасность для здоровья: каждый человек может испытывать более серьезные последствия для здоровья

To know more about Air Quality and Pollution, check the wikipedia Air Quality topic or the airnow guide to Air Quality and Your Health.

For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check www.myhealthbeijing.com blog.