Not sure how much of it is CC induced or just part of a normal cycle but historically, its been pretty rare to maintain 100% humidity and foggy conditions for an entire day. This isn't Seattle (yet anyways). At PVD we had five days that did that in 2023, plus another two days this past January, and March 5th had 99.9% rh. Not sure how accurate the data is, but prior to 2023, I could only find four other days since 1976 which had 100% rh, plus another four with 99.8% rh. So thats pretty crazy that in the past year we have had more days with 100% rh than we had in the previous 50 or so years.