Do not display outdated METAR

[nmoc.weather]

Aeronautical observations are very helpful, so the airport dots with the latest METAR in Windy are an important feature. However, it appears that old METARs are still considered although they do not reflect the current weather. This is a potential safety issue.
In a current example, due to industrial action no METAR for LPPR (Porto) is available on the morning of 16/08/2025. The last METAR was available at 23Z from 15/08/2025 but this is still displayed as "green" dot at 16/08/2025. Very likely there was fog and low cloud at that time but the old METAR indicates VFR conditions.

My proposal, also standard for other METAR displays, is to not show METAR data older than e.g. 2 hours to not bear the risk of disseminating wrong or outdated information.