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The Republic of South Africa, along with the Republic of Senegal is a leading example for Africa, for being the country with the most transparency on its Air Quality. The Air Quality monitoring network coverage is really good, and all the information is available publically and freely from the saaqis.org.za website.

Update June 4^th 2015: The Air Quality data service from saaqis.org.za is temporarilly not available. We are now investigating, together with the South African Weather Service team responsible for SAAQIS, a solution for getting the data back online.

If you want to stay informed about the Air Quality monitoring project for South-africa,
please register with the form below:

The South African Air Quality Monitoring Project - subscription form

Enter your name - eg "John Doe" Enter your email address - eg "john.doe@mail.com"

Write few words about your request - eg:"I live in Cape Town, and would like to known where the stations will be located.", "I would like to help by hosting an monitoring station", "I would like to know the average daily air quality for the past year", ..

About the Air Quality Levels

AQI	Air Pollution Level	Health Implications	Cautionary Statement (for PM2.5)
0 - 50	Good	Air quality is considered satisfactory, and air pollution poses little or no risk	None
51 -100	Moderate	Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.	Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
101-150	Unhealthy for Sensitive Groups	Members of sensitive groups may experience health effects. The general public is not likely to be affected.	Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
151-200	Unhealthy	Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects	Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion
201-300	Very Unhealthy	Health warnings of emergency conditions. The entire population is more likely to be affected.	Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
300+	Hazardous	Health alert: everyone may experience more serious health effects	Everyone should avoid all outdoor exertion

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.