Skip directly to searchSkip directly to the site navigationSkip directly to the page's main content

Data List for Maximum 8-hour Average Ozone Concentrations Above the National Ambient Air Quality Standards (NAAQS), Number of Person-days by Year, Salt Lake County, 2000-2021

YearNumber of Person-days
Record Count: 22
200027,030,540
200123,679,500
200229,380,864
200326,819,258
200414,012,100
200525,595,001
200638,671,920
200739,348,760
200817,991,954
200914,235,130
20106,197,874
201114,665,798
201217,024,336
201312,954,516
20146,541,542
201523,155,209
201614,568,892
201736,410,240
201843,800,054
201913,925,244
202017,482,755
202146,704,489

Data Notes

These data include "exceptional events", such as high winds, fires, construction, fireworks, etc.   [[br]] [[br]] Product of the total population of the county and the number of days over the daily National Ambient Air Quality Standard for ozone.

Data Sources

  • U.S. Environmental Protection Agency, Air Quality System (AQS)
  • Population Estimates: National Center for Health Statistics (NCHS) through a collaborative agreement with the U.S. Census Bureau, IBIS Version 2018

Graph Views

Definition

The United States Environmental Protection Agency (EPA) ozone standard states that the 8-hour average ozone level should not exceed 0.070 ppm. These standard levels are often referred to as the National Ambient Air Quality Standards (NAAQS). This level is considered protective for most people and within the normal defensive capacities of the human respiratory system.^1-3^[[br]] [[br]] ---- 1. McDonnell, et al. (1997) Prediction of ozone-induced FEV1 changes: Effects of concentration, duration and ventilation. American Journal of Respiratory and Critical Care Medicine. Vol 156, 715-722.[[br]] 2. Mudway, et.al. (2001) Differences in basal airway antioxidant concentrations are not predictive of individual responsiveness to ozone: A comparison of healthy and mild asthmatic subjects. Free Radical Biology and Medicine, Vol 31, No. 8. 962-974.[[br]] 3. Mudway, I and Kelly, F. J. (2004) An investigation of inhaled ozone dose and the magnitude of airway inflammation in healthy adults. American Journal of Respiratory and Critical Care Medicine, Vol 169, 1089-1095.

How We Calculated the Rates

Numerator:This Indicator Report contains the following variables:[[br]] 1. Number of days with maximum 8-hour average ozone concentrations above the National Ambient Air Quality Standards (NAAQS) by county[[br]] 2. Number of person-days with maximum 8-hour average ozone concentrations above the NAAQS by county
Denominator:When applicable, the population was obtained from the IBIS query system for appropriate years by county.

Date Indicator Content Last Updated: 10/28/2022


Utah Environmental Public Health Tracking Network, Office of Communicable Diseases, Utah Department of Health and Human Services | Telephone: 801-538-6191 | Email: eep@utah.gov
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, 25 April 2024 23:47:50 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: Tue, 1 Nov 2022 08:49:35 MDT