Meaning of air quality index

How do I read the air quality index? What is the air quality index and why is it important? An air quality index ( AQI ) is used by government agencies to communicate to the public how polluted the air currently is or how polluted it is forecast to become.

Public health risks increase as the AQI rises. Different countries have their own air quality indices , corresponding to different national air quality standards. As the AQI increases , an increasingly large percentage of the population is likely to experience increasingly severe adverse health effects.

Air quality is considered satisfactory, and air pollution poses little or no risk. A measure of the quantity of harmful particles and chemicals in the air. The index is used by weather forecasters to indicate the purity of the air on a given day. The higher the index, the smoggier (see smog) and more polluted the air.

It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. Where can I find the AQI ? People who are unusually sensitive to ozone or particle pollution may experience respiratory symptoms. Unhealthy for Sensitive Groups.

The AQI is between and 100. The air quality index (AQI) is an index for reporting daily and hourly air quality. It is an indication of how clean or polluted the air is in areas across NSW. It provides simple information on local air quality , the health concerns for different levels of air pollution, and how you can protect your health when pollutants reach unhealthy levels. The health effects from extreme pollution in places like China can be severe.

You’ve probably heard the words “code red” air quality , especially if you live in or near an urban area. Knowing what the color codes mean can help you protect your health and the health of your loved ones. Although AQI includes all available pollutant measurements, you should be aware that many areas have monitoring stations for some, but not all, of the pollutants. Air pollution poses little or no risk. You will most likely come across a dedicated column for PM 2. On a very clear and non-hazy day, the PM 2. Air Quality Definitions Acid precipitation or acid rain: Water falling in drops condensed from vapor in the atmosphere with acidic qualities.

Principal components typically include nitric and sulfuric acid with water vapor. Air Quality Index (AQI), Pollutants Standards Index (PSI) or the air quality standards adopted by your country. Like the weather, it can change from day to day or even hour to hour. At 1to 15 the air is considered unhealthy for sensitive groups: The elderly, children,. It is a health protection tool that is designed to help you make decisions to protect your health by limiting short-term exposure to air pollution.

An AQI between and is good. This scale is based on the National Ambient Air Quality Standards (NAAQS) and is described in the Code of Federal Regulations, Part 5 Appendix G. This report is based on the AQI standards.