I sent in my comments. Captcha said it failed first attempt, but submitted anyway for some reason. After that, it seemed fine. My suggestions are:
Include temperatures to the tenth of a degree, especially when looking at historical tables.
Include barometric pressure to the tenth of a mb too.
Include a way to view the historic table in a text only format.
Include an ability to switch times to 24-hour format.
Fix the typo for kilometres per hour. It should be km/h, not kph.