Chapter 11, Problem 11.75PAE

Interpretation Introduction

Interpretation:

The meaning when a smoggy day is considered “beyond index” should be mentioned and it should be stated whether a U.S. city ever recorded an AQI beyond index.

Concept introduction:

• The AQI is an index for reporting daily air quality. It states about the cleanliness of air and if polluted; related health effects of concern. The AQI focusses on health effects which may be experienced within a few hours or days after breathing polluted air. AQI is calculated for five major air pollutants. They are,

1. Ground level ozone
2. Particulate matter
3. Carbon monoxide
4. Sulfur dioxide
5. Nitrogen dioxide

The scale of AQI ranges from 0 to 500 and higher the AQI value, higher the effects which can be caused due to air pollution.

Word smog is derived from a combination of words, “smoke and fog”.

Although the scale AQI scale in the USA is not applied to all other countries, the values can be according to the country.