Very odd that it always loads quickly for me. I am going to try to figure out what the cause could be.
FYI - Same experience for me yesterday and today. Eight unpopulated boxes for more than a minute. Went away. Came back, and it loaded. On Mac running Chrome. Potentially material side-note: I opened it by Command-Clicking the link, which opens it in a new tab, but doesn't switch to that tab automatically. I finished reading the posts on this page, then switched to the Hubski Weather tab... and it was like it hadn't actually loaded anything in the background. Like the moment I switched to the tab, was the first time the page tried to draw. Is there some sort of "wait for focus" thing, that is stopping it from loading until its window is in the front...? (That'd be weird, but... I dunno... it occurred to me.)