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World Air Quality Index

Summarized by PlexPage
Last Updated: 18 January 2022

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General | Latest Info

From smog hanging over cities to smoke inside home, air pollution poses major threat to health and climate. Ambient air pollution accounts for estimated 4. 2 million deaths per year due to heart disease, lung cancer, acute and chronic respiratory diseases. Around 91 percentage of world's population lives in places where air quality levels exceed WHO limit. While ambient air pollution affects developed and developing countries alike, low - and middle - income countries experience highest burden, with greatest toll in WHO Western Pacific and South - East Asia regions. Sources of air are multiple and context - specific. Major outdoor pollution sources include residential energy cooking and heating, vehicles, power generation, agriculture / waste incineration, and industry. Policies and investments supporting integrated policies that support sustainable land use, cleaner household energy and transport, energy - efficient housing, power generation, industry, and better municipal waste management can reduce key sources of ambient air pollution. Air quality is closely linked to earths and ecosystems globally. Many drivers of pollution are also sources of greenhouse gas emissions. Policies to reduce air pollution, therefore, offer win - win strategy for both climate and health, lowering burden of disease attributable to air pollution, as well as contributing to near - and long - term mitigation of climate change. Exposure to smoke from cooking causes 3. 8 million premature deaths each year, mostly in low and middle - income countries. Burning fuels such as dung, wood and coal in inefficient stoves or open hearths produces variety of health - damaging pollutants, including particulate matter, methane, carbon monoxide, polyaromatic hydrocarbons and volatile organic compounds. Burning kerosene in simple wick lamps also produces significant emissions of fine particles other pollutants.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

What causes bad air quality?

Air pollution can be created by both manmade natural sources. Natural sources include windblown or kick - up dirt and sand, volcanic smoke, and burning materials. Manmade - sources, meaning that pollution is created by actions of human beings, tend to be leading contributor to air pollution in cities and are inherently more able to be influenced by regulations. Manmade sources primarily include various forms combustion, such as from gas - power transportation and industrial businesses, biomass burning, and agriculture. Contribution Of Various Air Pollution Sources To Locations ' Air Quality Is Highly Dependent On City Location And Regulations. Each location its own mix of contributors and pollutants. Sources are commonly categorized into following:

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

How does the AQI work?

Think of AQI as yardstick that runs from 0 to 500. Higher AQI Value, Greater Level Of Air Pollution And Greater Health Concern. For example, AQI value of 50 or below represents good air quality, while AQI values 300 represent hazardous air quality. For each pollutant, AQI value of 100 generally corresponds to ambient air concentration that equals level of short - term national ambient air quality standard for protection of public health. Aqi values at or below 100 are thought of as satisfactory. When AQI values above 100, air quality is unhealthy: at first for certain sensitive groups of people, then for everyone as AQI values get higher. Aqi is divided six categories. Each category to different levels of health concern. Each category also has specific color. Color makes it easy people to quickly determine whether air quality is reaching unhealthy levels in their communities.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Sources

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

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