Air quality index scale

How do you measure air quality? What is the unit of measurement for air quality? Air quality index (AQI) is a numerical scale used for reporting day to day air quality with regard to human health and the environment.

The daily of the index are used to convey to the public an estimate of air pollution level. The AQI is an index for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. It is a health protection tool used to make decisions to reduce short-term exposure to air pollution by adjusting activity levels during increased levels of air pollution.

EPA and local officials use the AQI to provide simple information about your local air quality , how unhealthy air may affect you, and how you can protect your health. AQI: Unhealthy for Sensitive Groups (1- 150) Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air. Each National Ambient Air Quality Standards ( NAAQS ) pollutant has a separate AQI scale , with an AQI rating of 1corresponding to the concentration where health effects for each pollutant begin to affect the general public.

The index is calculated hourly for more than two thousand air quality monitoring stations across Europe, using up-to-date data reported by EEA member countries. These data are not formally verified by the countries. By default, the air quality index depicts the situation hours ago. British Columbians can use the AQHI to check the quality of outdoor air before heading off to work or play.

You will most likely come across a dedicated column for PM 2. On a very clear and non-hazy day, the PM 2. It reflects the air pollutant with the highest reading in the monitoring network. The map below provides information for each monitoring site in the network. Air Quality Index (AQI), Pollutants Standards Index (PSI) or the air quality standards adopted by your country.

Clicking on a specific site will take you to a new window where you can access current day and five-day hourly AQI. The following table provides the health messages for ‘at risk’ individuals and the general public for each of the AQHI Health Risk Categories. Air Quality Health Index Categories and Health Messages The AQHI uses a scale to show the health risk associated with the air pollution we breathe. Air Quality Assessment Division EPA’s Office of Air Quality Planning and Standards.

The ozone maps available as air quality forecasting guidance products represent concentrations of forecasted ground-level ozone. The forecast represents the background and regional air quality away from these strong sources of pollution. Keep checking the latest forecasts on the Defra UK Air website for up to date information. The daily air quality index comes in three parts and includes additional advice for susceptible individuals, alongside advice for the general.

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. The higher the AQI value, the greater the health concern. 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. Occasionally, when the amount of air pollution is abnormally high, the number may exceed 10.

Most of us don’t really know much about how air quality. For example, in the U. China air quality index this is also a number between to 500. The Air Pollution Index (API) is a simple and generalized way to describe the air quality , which is used in Malaysia. It is calculated from several sets of air pollution data.

It was formerly used in mainland China and Hong Kong.