Someone else, or was it you?asked about barometric changes with weather impacting the risk of AMS. I answered something like that is significant at , say Denali, but is not so-recognized at lower mts. On the other hand, Boeing has increased the pressure in its new model Dreamliner to equivalent altitude of 7k rather than 8k (the official threshold of altitude illness) because there is evidence that some travellers illness is AMS. Yes, some people are canaries!
