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Query Results for Air Quality Index for Utah Counties and Core-Based Statistical Area (CBSA) - Percent of Days by Air Quality Index Category

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Single Years Filter: 2020
AQI Filter: Good
Data Grouped By:Single Years
AQI is a value that runs from 0 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 50 represents good air quality with little potential to affect public health, while an AQI value over 300 represents hazardous air quality with potentially serious health effects.

An AQI value of 100 generally corresponds to the National Ambient Air Quality Standard for the pollutant, which is the level EPA has set to protect public health. AQI values below 100 are generally thought of as satisfactory. When AQI values are above 100, air quality is considered to be unhealthy, first for certain sensitive groups of people, then for everyone as AQI values get higher.

AQI is divided into six levels. These levels are: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), and Hazardous (301-500).
  • Air Quality System Data Mart [internet database] available at https://www.epa.gov/outdoor-air-quality-data/air-quality-index-report
The number of monitored days is separate for each monitored county. Combining multiple counties by year will result in a total number of days that exceeds the number of days in a year. For example, if a user selects Salt Lake County and Duchesne County in the Percent Module and displays by Year and groups by AQI, the results for Total Number of AQI Days in Category and Total Number of Monitored Days will be the sum of both Salt Lake County and Duchesne County.

Although AQI includes all available pollutant measurements, it is important to be aware that many areas have monitoring stations for some, but not all, of the pollutants. Furthermore, not all counties or CBSA have monitors. A daily index value is calculated for each air pollutant measured. The highest of those index values is the AQI value.
These data were queried on: Thu, 18 Aug 2022 16:39:53 MDT

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The information provided above is from the Utah Department of Health's Center for Health Data IBIS-PH web site (http://epht.health.utah.gov). The information published on this website may be reproduced without permission. Please use the following citation: " Retrieved Thu, 18 August 2022 16:39:53 from Utah Department of Health, Center for Health Data, Indicator-Based Information System for Public Health Web site: http://epht.health.utah.gov ".

Content updated: Thu, 3 Feb 2022 14:58:02 MST