Health Indicator Report of Air Quality: Particulate Matter (PM2.5)
PM2.5 can get deep inside the lungs and cause a variety of symptoms, such as painful breathing, chest tightness, headache, and coughing. PM2.5 can exacerbate respiratory infections, trigger asthma attacks and symptoms, and cause temporary reductions in lung capacity. Respiratory symptoms are more likely to occur when PM2.5 levels exceed the EPA standard, but are possible when PM2.5 levels are below the standard, especially in sensitive populations. PM2.5 has been found to be associated with an increased risk of chronic lung disease^2^.
In addition to these adverse outcomes, PM2.5 can influence the environment in ways that will eventually affect human health. Fine particles cause haze which reduces visibility. The long-term effects of PM2.5, which settles in the soil, natural water sources, forests, and agricultural areas, are still to be determined.
Whether or not climate change has an effect on PM2.5 concentration has yet to be determined. However, as temperatures increase, PM2.5 concentration has been shown to increase in the United States, but this is not the general consensus of the scientific community. Researchers seem to agree that as precipitation increases, PM2.5 levels will decrease since it "clears" the air^3^. If precipitation events are seen to increase with climate change, it is reasonable to conclude that PM2.5 levels may decrease. PM2.5 concentrations could also be affected by air stagnation events (i.e., inversions). If air stagnation events increase in frequency with climate change, PM2.5 levels are likely to rise because these events trap the pollution at the Earth's surface^3^. More research is needed to accurately quantify to what extent PM2.5 levels will be affected by a changing climate.[[br]]
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PM2.5 Levels Over the National Ambient Air Quality Standard: Percent of Days by Year, Carbon County, 2021
Notes
Percent reflects the percent of days sampled in the county during the year, not total days of the year.Data Source
U.S. Environmental Protection Agency, Air Quality System (AQS)Data Interpretation Issues
Data on PM2.5 levels are only available where air monitors exist and when they are used. The Environmental Protection Agency (EPA) and the Utah Department of Environmental Quality (DEQ) have scientifically determined where in Utah PM2.5 is likely to exceed the standard. Geographies reported will vary based on measurement type. Data for this report represent ambient air, or outside air quality. The relationship between ambient concentrations and personal exposure can vary significantly depending upon the pollutant, activity patterns, and micro-environments. Data for this report came from the EPA; therefore, it may differ slightly from data to other sources. One reason for a possible difference is that this data includes [https://deq.utah.gov/air-quality/exceptional-events-program exceptional events], which includes air pollution generated from fireworks, construction, fires, and other sources.- Percent of Population Living in Counties Meeting the National Ambient Air Quality Standard, Utah, 2000-2021
- Percent of Days by Year, Box Elder County, 2000-2021
- Percent of Days by Year, Cache County, 2000-2021
- Percent of Days by Year, Davis County, 2000-2021
- Percent of Days by Year, Duchesne County, 2011-2021
- Percent of Days by Year, Garfield County, 2000-2021
- Percent of Days by Year, Iron County, 2018-2021
- Percent of Days by Year, Salt Lake County, 2000-2021
- Percent of Days by Year, San Juan County, 2000-2021
- Percent of Days by Year, Tooele County, 2000-2021
- Percent of Days by Year, Uintah County, 2010-2021
- Percent of Days by Year, Utah County, 2000-2021
- Percent of Days by Year, Washington County, 2001-2021
- Percent of Days by Year, Wayne County, 2001-2021
- Percent of Days by Year, Weber County, 2000-2021
- Person-days by Year, Box Elder County, 2001-2021
- Person-days by Year, Cache County, 2000-2021
- Person-days by Year, Carbon County, 2021
- Person-days by Year, Davis County, 2000-2021
- Person-days by Year, Duchesne County, 2011-2021
- Person-days by Year, Garfield County, 2000-2021
- Person-days by Year, Iron County, 2018-2021
- Person-days by Year, Salt Lake County, 2000-2021
- Person-days by Year, San Juan County, 2000-2021
- Person-days by Year, Tooele County, 2000-2021
- Person-days by Year, Uintah County, 2010-2021
- Person-days by Year, Utah County, 2000-2021
- Person-days by Year, Washington County, 2001-2021
- Person-days by Year, Wayne County, 2001-2021
- Person-days by Year, Weber County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Box Elder County, 2001-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Cache County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Carbon County, 2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Davis County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Duchesne County, 2011-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Garfield County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Iron County, 2018-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Salt Lake County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), San Juan County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Tooele County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Uintah County, 2010-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Utah County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Washington County, 2000-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Wayne County, 2001-2021
- Average Ambient Concentrations (based on seasonal averages and daily measurement), Weber County, 2000-2021
- Levels Over the National Ambient Air Quality Standard: Number of Days by Year, Box Elder County, 2000-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Cache County, 2000-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Carbon County, 2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Davis County, 2000-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Duchesne County, 2011-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Garfield County, 2000-2021
- Number of Days by Year, Iron County, 2018-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Salt Lake County, 2000-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, San Juan County, 2000-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Tooele County, 2000-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Uintah County, 2010-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Utah County, 2000-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Washington County, 2001-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Wayne County, 2001-2021
- Over the National Ambient Air Quality Standard: Number of Days by Year, Weber County, 2000-2021
Definition
Particulate matter that measures 2.5 micrometers in diameter or less is often called PM2.5. Particulate matter 10 (PM10) measures one-seventh the width of a strand of human hair, so one can imagine just how small PM2.5 really is. PM2.5 is composed of metals, allergens, nitrates, sulfates, organic chemicals, soil, and dust that are emitted from sources such as combustion products, soot from fireplaces, and blowing dust from construction sites and agricultural activities. PM2.5 levels are generally higher during the winter months due to weather, temperature, and inversions. The United States Environmental Protection Agency (EPA) PM2.5 standard states that daily averaged PM2.5 levels should not exceed 35 micrograms per cubic meter, while annually averaged PM2.5 levels should not exceed 12 micrograms per cubic meter^1^.[[br]] [[br]]Numerator
This indicator report contains the following views: # Percent of days above the National Ambient Air Quality Standards (NAAQS) # Number of person-days above the NAAQS # Average annual ambient concentrations of PM2.5 # Percent of population living in counties exceeding NAAQSDenominator
Where applicable, population based on U.S. Census Bureau estimates for July 1 of each year.Other Objectives
Physical exercise is essential to maintaining good health. In order to do this safely, refer to daily PM2.5 levels by checking them at [https://air.utah.gov/]. If PM2.5 levels are high, consider exercising indoors. If outdoor exercise is unavoidable during high PM2.5 levels, consider light to moderate activity such as walking.How Are We Doing?
Several of the most urban counties in Utah have days that do not comply with the PM2.5 standard. This may be due in part to the unique geography and seasonal conditions in Utah. PM2.5 levels increase seasonally in the winter and often due to inversions. The Utah Department of Environmental Quality (DEQ) is working to decrease the number of days over the PM2.5 standard.What Is Being Done?
The Utah Department of Environmental Quality (DEQ) is working to decrease PM2.5 emissions to comply with national standards. Because the majority of particulate matter is caused by automobile emissions, DEQ encourages the public to use mass transit and to stay indoors on days with high pollution levels, which you can check at [http://www.health.utah.gov/utahair]. In addition, DEQ has studied the effects of high particulate matter levels on children playing outside at recess so that schools may make informed decisions about when to keep children indoors. The DEQ 3-day air quality forecasting program uses a red, yellow, and green stoplight color code to inform the public about how they can help keep pollution levels low. A green day informs the public that pollution levels are low, and they can safely drive and spend time outside. A yellow day suggests citizens consider limiting their driving to reduce pollution levels. A red day strongly encourages the public to reduce driving and other polluting activities to prevent pollution levels from exceeding the health standard. Ultimately, air quality in Utah depends on each individual taking steps to reduce the amount of energy being used and pollution being emitted.Available Services
The [http://www.health.utah.gov/utahair/ Air Quality and Public Health in Utah] web page provides a wide range of air quality-related topics. These topics include *[http://www.health.utah.gov/utahair/AQI/ Air Quality Index] *[http://www.health.utah.gov/utahair/pollutants/ Information about specific air pollutants] *Health effects from air pollution **[http://www.health.utah.gov/utahair/birthoutcomes/ Adverse birth outcomes] **[http://www.health.utah.gov/utahair/respiratory/#Asthma Asthma] **[http://www.health.utah.gov/utahair/respiratory/#COPD Chronic obstructive pulmonary disease] **[http://www.health.utah.gov/utahair/CAD/ Heart disease and heart attacks]
Page Content Updated On 10/31/2022,
Published on 11/01/2022