Comment by jcutrell

Things I use as a pilot of a single engine piston:

- Temp dew point spread - Barometric pressure - TAF / forecast - Wind shear - Freezing level - Cloud tops - Cloud level AGL - visibility measured in actual distance

All of these things can’t be measured easily by a human. Visibility is probably the easiest, but can you tell me what the dew point is easily?

If I use it, imagine the critical importance for airliners.