Which temperature scales are commonly referred to in measurements?

The commonly used temperature scales for everyday measurements are Fahrenheit and Celsius. This is especially true in various regions around the world. Fahrenheit is primarily used in the United States for weather forecasting, cooking temperatures, and other day-to-day applications. Celsius, on the other hand, is utilized by most countries and is the default scale in scientific contexts, as it is based on the freezing and boiling points of water.

Fahrenheit is a scale that divides the temperature range based on specific reference points of water and human body temperature, while Celsius is a metric scale where 0 degrees corresponds to the freezing point and 100 degrees to the boiling point of water at standard atmospheric conditions. The widespread use of these two scales makes them the most common and relevant for temperature measurements in everyday life, thus making them the correct answer to the question.