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How to Read a METAR – Our Full Guide to Aviation Weather Reports

Pilot Institute

When flying an airplane, you become a part of the air around you. As a good general rule, the smaller the difference between the outside air temperature (OAT), and the dew point, the more likely it is that a cloud will form, and the lower its base will be. Forget checking your phone apps or the TV. Why is it important in a METAR?

Weather 72
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What Is Air Density? A Simple Guide for Pilots

Pilot Institute

Density Altitude = Pressure Altitude + [120 x (OAT – Standard Temperature)] For example, the temperature at a pressure altitude of 5,000ft is 7C. Note: OAT and ISA Standard Temperature should be in degrees Celsius. Check NOTAMs and weather briefings for any density altitude advisories.