![]() ![]() (Fires often arise naturally when certain substances in nature are heated as a result of prolonged dry and hot weather.)įor example, on August 24, 2020, because of smoke from multi-day wildfires in California, the air quality in the San Francisco Bay Area was worse than in the Chinese and Indian capitals of Beijing and New Delhi, respectively, where, as the Air Quality Index map, which we will learn to read further in the article, shows, there is the worst air on the entire planet. But not only that. Sometimes the nature is to blame. The main sources of these bad substances in the air are primarily harmful emissions from all types of liquid fuel vehicles and the amount of them (traffic on the roads), from industrial and agricultural production and other products of human activity. Ozone and particle pollution are two of the most widespread pollutants in the U.S. The main air pollutants are a whole set of harmful and hazardous substances that we do not see as opposed to some natural phenomena like clouds, rain, or bright sunshine. According to the Environmental Protection Agency (EPA) of the US, the top five air pollutants taken into account to calculate the Air Quality Index are ground-level ozone, particle pollution (or particulate matter, including PM2.5 and PM10), carbon monoxide, sulfur dioxide, nitrogen dioxide. In other words, we can use the index to determine how polluted the air is in a particular area of the world: it could the place of your living, your favorite outdoor spot, or travel destination. The Air Quality Index is an index for measuring the quality of the air we breathe. What is the Air Quality Index definition? ![]() This data is also presented on an Air Quality Index map.įrom this article, you will learn what is AQI and how to read such a map, as well as where the best and worst air on the planet is. It helps you plan your outdoor activities and life in general. The good air in the weather forecast for today is not just about the comfortable temperature or humidity, but also an Air Quality Index (AQI) that shows you how clean the atmosphere around you in a particular place. ![]()
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