The table below defines the Air Quality Index scale as defined by the US-EPA 2016 standard:

Sep 18, 2024 · The Air Quality Index, or AQI, is the system used to warn the public when air pollution is dangerous. The AQI tracks ozone (smog) and particle pollution (tiny particles from smoke, power plants and factories, vehicle exhaust, and other sources), as well as four other widespread air pollutants.

The U.S. Air Quality Index (AQI) is EPA's tool for communicating about outdoor air quality and health. The AQI includes six color-coded categories, each corresponding to a range of index values. The higher the AQI value, the greater the level of …

"Unhealthy" (151 - 200) When air quality is in this range, any individual who is active outdoors may experience the respiratory effects described above. Members of sensitive groups are likely to experience more severe effects.

Check out the real-time air pollution map, for more than 80 countries. Can not find your city on the map? The GAIA air quality monitor uses laser particle sensors to measure in real-time PM2.5 and PM10 particle pollution, which is one of the most harmful air pollutants.

Dec 17, 2024 · Since levels rarely exceed a value of 200 in the United States, in most cases only the range from 0 to 300 is shown. The higher the AQI value, the greater the level of pollution and the greater the health concern. An AQI value of 100 generally corresponds to the level of the National Ambient Air Quality Standard for the pollutant.

Feb 25, 2022 · AQI of 151 to 200 is very unhealthy for sensitive people. They may experience severe respiratory symptoms. People without lung problems may also experience symptoms. The color code is red. AQI of 201 to 300 is very unhealthy for everyone and a health alert is issued. The color code is purple.

Aug 4, 2018 · The Air Quality Index (AQI) is a measurement of air pollutant concentrations in ambient air pollution and their associated health risks. Air pollutants measured in AQI. There are six air pollutants measured in the index formula, including: PM2.5; PM10; carbon monoxide; sulfur dioxide; nitrogen dioxide; ground-level ozone

An AQI of 200 and above means the amount of pollution in the air has reached dangerous levels for everyone, regardless of their current health or planned outdoor activities. The Air Quality Index reads as follows: 0-50: Good (green) The air is clean and clear, and pollutants are mostly absent. It is safe for everyone to be outdoors.

Jan 1, 2025 · Discover what the normal range of the Air Quality Index (AQI) means, its impact on health, and how to interpret AQI levels for better air quality awareness.