Region 8 Air Resource Management. Air Quality. Weather Conditions. Recommended Actions. Health Effects. Good AQI: Green. Moderate AQI: Yellow. Unhealthy AQI: Red. The weather conditions listed above are common weather types associated with the respective air quality levels. A combination of part or of all these weather conditions could lead to a certain level of observed air quality.
Knowing what the color codes mean can help you protect your health and the health of your loved ones. Each color corresponds to a different level of health concern. Below are the color codes, from best to worst, with their corresponding health warnings. AQI Values. As you can see, each color also corresponds to a range of Air Quality Index Values.
Index Family Overview
You can think of the AQI as a yardstick that runs from 0 to The higher the AQI value, the greater the level of air pollution and the greater the health danger. For example, an AQI value of 50 represents "good" air quality and little danger to public health, while an AQI value of represents "very unhealthy" air quality. Moderate AQI: Yellow. Unhealthy AQI: Red.
The weather conditions listed above are common weather types associated with the respective air quality levels. A combination of part or of all these weather conditions could lead to a certain level of observed air quality.
- Index - Web APIs | MDN.
- The Air Quality Index and Your Health;
- 23 things you should know about VLOOKUP.
- how to search for people on msn.
Knowing what the color codes mean can help you protect your health and the health of your loved ones. Each color corresponds to a different level of health concern.
- Excel video training;
- Index Family Overview.
- john offender sex site walsh web.
- list films teen prison women scene.
- people looking apartment sharing in orlando.
Below are the color codes, from best to worst, with their corresponding health warnings. AQI Values. As you can see, each color also corresponds to a range of Air Quality Index Values. You can think of the AQI as a yardstick that runs from 0 to The higher the AQI value, the greater the level of air pollution and the greater the health danger. For example, an AQI value of 50 represents "good" air quality and little danger to public health, while an AQI value of represents "very unhealthy" air quality.
Glycemic index for 60+ foods
So, AQI values below are generally thought to be satisfactory. When AQI values rise above , air quality is considered unhealthy — at first for certain sensitive people, then for everyone as AQI values get higher. However, the AQI can be used to represent five pollutants that pose a threat to human health. These pollutants are:. The EPA and other researchers have studied the health effects of different levels of these pollutants to determine where to set the standards and health warnings.
For each pollutant, a color code represents a specific range of concentrations.
Services on Demand
Price index Numbers: Price index numbers measure the relative changes in prices of a commodity between two periods. Prices can be either retail or wholesale. Price index number are useful to comprehend and interpret varying economic and business conditions over time. Quantity Index Numbers: These types of index numbers are considered to measure changes in the physical quantity of goods produced, consumed or sold of an item or a group of items.
Methods of constructing index numbers: There are two methods to construct index numbers: Price relative and aggregate methods Srivastava, In aggregate methods, the aggregate price of all items in a given year is expressed as a percentage of same in the base year, giving the index number. Relative method: The price of each item in the current year is expressed as a percentage of price in base year.
This is called price relative and expressed as following formula:. In simple average of relative method, the current year price is expressed as a price relative of the base year price. These price relatives are then averaged to get the index number. The average used could be arithmetic mean, geometric mean or even median. Weighted index numbers: These are those index numbers in which rational weights are assigned to various chains in an explicit fashion. Weighted aggregative index numbers: These index numbers are the simple aggregative type with the fundamental difference that weights are assigned to the various items included in the index.
Characteristics of index numbers: Index numbers are specialised averages.
Download 200+ Excel Shortcuts
Index numbers measure the change in the level of a phenomenon. Index numbers measure the effect of changes over a period of time.
Uses of Index number: Index numbers has practical significance in measuring changes in the cost of living, production trends, trade, and income variations.