Air Quality Index

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  • Air Quality Index Case Study

    Measuring Air Quality Air quality is measured using the Air Quality Index (AQI). Developed by the Environmental Protection Agency (EPA), the index monitors five major air pollutants and measures the level of health concern these pollutants cause. The index was mandated under the Clean Air Act in 1976, it was originally called the Pollutant Standards Index. The AQI is used internationally. In the United States, all cities with populations larger than three hundred and fifty thousand are required to report AQI results each day. (AirNow, n.d.; EPA, n.d.). The AQI measures fine particulate matter pollution and Ozone (O3), two pollutants of concern in the U.S. The AQI also measures, Carbon monoxide (CO), Nitrogen Dioxide (NO2), and Sulfur Dioxide (SO2). Using a scale of 0-500, results fall into six categories: Good (≤ 50), Moderate (51-100), Unhealthy for sensitive groups (101-150), Unhealthy for everyone (151-200), Very Unhealthy (201-300), and Hazardous (> 300). San Francisco’s AQI On Tuesday, July 28, 2015, the Bay Area Air Quality Management District (BAAQMD) reported on their website (, for San Francisco: Table 1. Particulate matter Based on 24-hour concentrations (using PM2.5) 57 Moderate Ozone Based on 8-hour average concentrations 41 Good Carbon monoxide Based on 8-hour average concentrations 12 Good Nitrogen Dioxide Based…

    Words: 776 - Pages: 4
  • Air Quality Index (AQI) Values

    (1) Introduction Air pollution is the introduction of particulates, biological molecules, and many harmful substances into the earth’s atmosphere. All these substances are growing threats to human health and natural environment and it is mostly an impact caused by human actions. Since the industrial revolution, the world saw a huge increase in the usage of chemicals and fossil fuels to drive the majority of our energy usage. Pollution levels has only risen since then and have never seen a sign…

    Words: 821 - Pages: 4
  • Air Pollution In Greater Los Angeles Area

    Air pollution has become a major problem in the Greater Los Angeles Area. The air quality has become so terrible here that Los Angeles is leading the United States in the worst air quality. To illustrate this, Imam from CNN has stated that “Los Angeles [is] coming in at No. 1 for ozone pollution” (Imam, April 2016). This allows a striking comparison to others cities. However, ozone pollution is only one of several things that can make up air pollution. Pollution control authorities in my…

    Words: 751 - Pages: 4
  • The Consequences Of Air Pollution In China

    Since the 13th century to present day, the world has been suffering from pollution. Scientist have known about the Earth’s pollution issues for centuries, especially when coal was introduced. Air pollution is one of the worst forms of pollution. Scientists recognize air pollution as a threat to human health and ecosystems, especially in countries such as China. China is a country falling under the consequences of air pollution. Air pollution in China has become very out of control. There are…

    Words: 1401 - Pages: 6
  • Census Tract 1220.01, Arlington, And Texas

    During the time of visiting, the temperature was 97° F and very hot. According to Texas Commission on Environmental Quality, Arlington air quality index is moderate. Air Quality Index is an indicator of overall air quality, because it takes into account all of the criteria air pollutants measured within a geographic area. Although this information was not available for the census tract, air pollution index for Arlington scored at 109, Tarrant County at 108, and Texas 95 in comparison to the…

    Words: 873 - Pages: 4
  • Outdoor Air Pollution: Acute Lower Respiratory Illness

    Air pollution is the primary reason of why many adults and children suffer from several respiratory illnesses. The outdoor air pollution is not only man-made but nature has a role in it. Millions of people die or are diagnosed with diseases that could be acute or chronic. There are ways to save lives with simple steps that could be impactful. It could be complicated because of all the political and economic value tied into it, but there is always a way to make change possible.…

    Words: 969 - Pages: 4
  • Essay On The Role Of Air Pollution In China

    I have reviewed some scholarly articles on health effects of air pollution in China, and these articles have obtained vital information relating to these issues. In China, the air quality has been a major concern for many of the people. This essay will focus on three components: sources contributed to air pollution, the potential hazard and recovery. China’s economy has a tremendous impact on the environment, as the Chinese population increases, the country in demand for resources. People are…

    Words: 1283 - Pages: 6
  • Office Staff Might Feel Uncomfortable Case Study

    ventilation to a building and heat losses from the building in thermal comfort terms. Ventilation is the process of replacing old stale air in any space to provide a high air quality which in parallel can control temperatures, remove moisture and regain oxygen while also remove unwanted gasses such as odors, smoke, heat, dust, airborne bacteria, and carbon dioxide. Ventilation is used to introduce outside air, to keep interior building air circulating, and to prevent stagnation of the inside air…

    Words: 1507 - Pages: 7
  • The Importance Of Air Quality In Toronto

    In 2013, air pollution has been characterized by the WHO as the “most widespread environmental carcinogen” (IARC, 2013). For Torontonians, the problem regarding air quality is also a big challenge upfront. Although the overall air quality has been improved for recent years, Toronto still sees over a thousand premature deaths and over three thousand hospitalization due to respiratory diseases every year. (Toronto 's Vital Signs, 2015) Moreover, Dr. David McKeown (2007), Toronto medical officer of…

    Words: 1481 - Pages: 6
  • Walkability Inequalities

    (2005) developed walkability index (WI) to measure the characteristics of the physical environment that contribute to walkable neighbourhood design. Leslie et al. (2007) adapted the WI to Australia. WI for these studies contains four main data components. The first component is residential density which is the number of residential units per particular areal unit within a neighbourhood. A high residential density value shows that more people live in the area. The second data component of the…

    Words: 891 - Pages: 4
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