The graph below shows density altitude trend over of last 4 days of the selected airport. Any airport with sufficient information to calculate density airport from the Aviation Weather Website can be queried. This tool is not limited to Guatemala, it works world-wide! Disclaimer! Dont use this tool for flight planning. There is not guarantee that the above numbers are accurate. How to use the tool1. Type the 4 letter ICAO code of an airport. Alternatively you can simply click on one of the most frequently queried airport identifiers such as MGQZ2. Click Submit3. Validate graph. Extremely big differences from one data point to the next must raise suspicion. Check the source data with the link above. 4. Analyze the result. Hover over the data points with your mouse and the graph will show you the specifuc density altitude values over time. The blue line shows the actual altitude of the airport. How the tool works1. The ICAO code is being looked up in the list of airports of the Aviation Weather website. If the airport is found the altitude is extracted from this file. Altitude is usually required to calculate density altitude. Additionally the graph shows altitude as blue line. 2. METAR information is queried and parsed from the Aviation Weather website. Click on the source data link above to view the raw data the graph is generated from.3. The data is passed and the density altitude is being calculated. The density altitude calculations are based off the website of Richard Shelquist. 4. The result is then plotted in the graph.