On IMDb, it has risen from 7.2 to 8.3/10 in the past 2 days.
EDIT: Scores above 8/10 on IMDb have usually resulted in RT scores from the 80s to the 90s. (Even though these are coming from audiences and not critics)
I can't remember who said it but someone on The Peanuts Movie thread said that The Peanuts Movie has sold out more shows than Spectre has in the Chicago area. If that's true, that could be a big indicator right there.
Remember Inside Out vs. Jurassic World? Inside Out still opened to $90M against JW's $106M second weekend.
EDIT: Didn't realize this was already mentioned.