GEOGRAPHY & CARTOGRAPHY CALCULATOR
Sourceair Quality Aqi
A precise tool.
What is the Sourceair Quality Aqi & How does it work?
The Air Quality Index (AQI) is a standardized metric that translates complex pollutant measurements into a single number representing the health risk of the ambient air. Values typically range from 0 (good) to 500 (hazardous), with breakpoints that correspond to specific health advisories. The index is calculated separately for major pollutants—such as PM2.5, PM10, O₃, NO₂, SO₂, and CO—and the highest sub‑index becomes the overall AQI for a location.
I = frac{I_{hi} – I_{lo}}{C_{hi} – C_{lo}} times (C – C_{lo}) + I_{lo}
I = AQI value for the pollutant, C = measured concentration, I_{hi} and I_{lo} = AQI breakpoints, C_{hi} and C_{lo} = concentration breakpoints.
Parameters
Result
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Frequently Asked Questions
What is the Air Quality Index (AQI)?
The Air Quality Index (AQI) is a metric that translates complex pollutant measurements into a single number representing the health risk of ambient air. It ranges from 0 (good) to 500 (hazardous).
How is the AQI calculated?
The AQI is calculated separately for major pollutants like PM2.5, PM10, O₃, NO₂, SO₂, and CO. The highest sub-index among these becomes the overall AQI for a location.
What do the different AQI values mean?
AQI values range from 0 (good) to 500 (hazardous). Values between 0-50 are considered good, 51-100 moderate, 101-150 unhealthy for sensitive groups, 151-200 unhealthy, 201-300 very unhealthy, and above 300 hazardous.
How do I interpret the AQI formula?
The AQI formula is I = (I_{hi} - I_{lo}) / (C_{hi} - C_{lo}). It calculates the index based on breakpoints for pollutant concentrations, where I_{hi} and I_{lo} are the high and low values of the AQI scale, and C_{hi} and C_{lo} are the corresponding pollutant concentration levels.
What pollutants does the AQI consider?
The AQI considers major pollutants such as PM2.5, PM10, O₃, NO₂, SO₂, and CO to determine the overall air quality index for a location.
Can I use this calculator for any location?
This calculator is designed to help you understand how AQI is calculated based on specific pollutants. However, actual AQI values may vary by location and should be checked from local environmental agencies or monitoring systems.
What are the health implications of a high AQI?
A high AQI indicates poor air quality, which can lead to respiratory issues, cardiovascular problems, and other health risks. Sensitive groups such as children, older adults, and those with existing health conditions may be particularly affected.
Results are for informational purposes only and do not constitute professional advice.