Air quality index 500

Think of the AQI as a yardstick that runs from to 500. The higher the AQI value, the greater the level of air pollution and the greater the health concern. 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. A key tool in this effort is the Air Quality Index , or AQI.

The Air Quality Index is a 0-5scale used by the Environmental Protection Agency (EPA) to report and forecast air pollution. Keep track of the most polluted cities in the world with our air quality index (AQI) ranking. How Does the Air Quality Index Work?

In more than 8counties across the nation, air pollution levels are measured daily and ranked on a scale of for perfect air all the way up to 5for air pollution levels that pose an immediate danger to the public. 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. The AQI is an index for reporting daily air quality. 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. Air quality is considered satisfactory, and air pollution poses little or no risk. AIRNow - San Francisco, CA Air Quality - 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.

The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data. However, instead of showing changes in the temperature, the AQI is a way of showing changes in the amount of pollution in the air. A photograph showing smog over downtown Los Angeles. Interactive Map of Air Quality. What is the Air Quality Index ? Around much of the worl the Air Quality Index AQI is dominated these days by particulate matter 2. Based on several studies at both low and high pollution levels, the human health effects are believed to be.

Air quality professionals typically use the Series 5for short term air quality studies and carrying out checks on pollution “hot spots”. The Series 5can also be deployed for short term fixed monitoring by adding an optional outdoor enclosure. Data is stored on board the Series 5with a maximum 1records available. It’s ba but it very much depends on the pollutant that is causing the elevated air quality index (AQI).

Most AQI ratings elevate due to increased levels of one of the US Environmental Protection Agency’s criteria pollutants, usually particulate. Preliminary Data Warning: The information presented is the first available data from our air monitoring network. The values have not been verified for accuracy or been through the appropriate quality assurance and control validation procedures. The European Air Quality Index.

Displaying up-to-date information for Europe, users can gain insights into the air quality in individual countries, regions and cities. The Current Air Quality Index (above) applies to the entire county. 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.

Clicking on a specific site will take you to a new window where you can access current day and five-day hourly AQI.