In the United States, one of the cleanest air in the world, particulate matter still caused 88,000 premature deaths in 2015. This makes air pollution more deadly than diabetes and flu. In the federal capital Vienna, air pollution and with it the risk of premature death has worsened or increased in recent years. On the worst day of the year, the air quality is more dangerous than that in the Brazilian metropolis Sao Paolo, Chicago or the Greek capital Athens. The air in Vienna is worse than that in Tokyo or Manila, so read on the website of the weather service.