Us epa air quality index

How is AQI calculated? For example, an AQI value of represents good air quality with little potential to affect public health, while an AQI value over 3represents hazardous air quality. Agency ( EPA ) and your local air quality agency have been working to make information about outdoor air quality as easy to find and understand as weather forecasts. EPA and local offi-cials use the AQI to provide simple information about your local air quality, how unhealthy air may. Users can downloa output, view or visualize the data.

EPA sets national air quality standards for six common air pollutants. Each year EPA tracks the levels of these air pollutants in the air. EPA posts the of our analyses to this web site.

Each of the bands comes with advice for at-risk groups and the general population. These lists include the parameters as defined in the EPA AQS system as CORE HAPS or VOC. You can view the list of parameters included in either catagory by visiting the AQS Code Tables page for Parameter Classes and searching for CORE_HAPS or VOC. A value in the unhealthy range, above the national air quality standard for any pollutant, is of concern first for sensitive groups, then for everyone as the AQI value increases. 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.

As part of this initiative, U. Mission Thailand is reporting the U. On unhealthy days, your organization can use this information to adjust physical activities to help reduce exposure to air pollution, while still keeping people active. Department of State (DOS) and the U. Embassies and Consulates around the globe. Embassy Kathmandu recently installed two air quality monitors (AQMs) in Kathmandu: they are located on the Embassy grounds and at the. Current air pollution levels for fine particles and ozone, along with a five-day forecast.

The air quality data collected by the U. AQI) value that can help inform health-related decisions. This algorithm converts raw PM 2. Environmental Protection Agency’s ( EPA ) NowCast algorithm. All EPA air quality reports and the latest air quality bulletin can be viewed and downloaded at Reports and Bulletins. 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. An like the weather, the EPA notes, it can fluctuate frequently. Air Quality Index Report. The starting point for graphical digital government air quality guidance.

The AQI reports on five major air pollutants: ozone, particulate matter, sulfur dioxide, carbon monoxide and nitrogen dioxide. The overall AQI for a site is the highest index value of any of the pollutants. An AQI value is given for each monitoring site and pollutant. Note: this graph does not include all the sources of air pollution considered in AQI calculation. Other sources include ozone and CO.

EnviroFlash is sponsored by the EPA with support from State and local air quality agencies. Some of these air quality reports below are in near real-time and some provide real ambient data while others provide information based on the air quality index. Displaying up-to-date information for Europe, users can gain insights into the air quality in individual countries, regions and cities.