Air Pollution Chart – Standard metric
The World Air Quality Report uses PM 2.5 values in micrograms per cubic meter (g/m3) as the reference measure.
PM 2.5 is a tiny aerosol particle with a diameter of 2.5 microns, one of six frequently measured criterion air pollutants, and usually regarded as the most hazardous to human health. Its presence in the environment can have a variety of negative health impacts.
PM 2.5 stands for Particulate Matter 2.5, and it refers to tiny airborne particles or droplets in the atmosphere that have a diameter of 2.5 micrometers (μm) or smaller. These particles are often referred to as “fine particulate matter” and are a type of air pollution.
PM 2.5 is emitted from a number of sources and varies in chemical composition, physical qualities, and features. PM 2.5 contains a variety of chemical components, including sulphates, nitrates, black carbon, and ammonium. The most frequent man-made sources are internal combustion engines. By comparing these particles in the air, the World Air Quality Report is created. The most prevalent natural causes of PM 2.5 are wildfires, dust storms, sandstorms, and thunderstorms.
World Air Quality Index Report 2023
Urban areas attract people looking for better lives and job possibilities. However, increasing urbanization adds to high levels of air pollution, which has serious consequences for public health. It contributes to the spread of illnesses including cardiovascular disease, respiratory problems, type 2 diabetes, and respiratory infections. These disorders’ repercussions contribute to premature death rates.
For healthy air, the World Health Organization (WHO) has produced Air Quality Guidelines that propose an outdoor refined particle pollution concentration of 5 micrograms per cubic meter. However, the air quality regulations in many major global cities do not satisfy the WHO requirements.
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