Like I said…I haven’t been following it enough to know if it’s been trending more away from other nearby sites. But when this is your topography around the ASOS anything goes.
EWR stands out many times (110° in 2011 was ridic), but their obs tend to have validity due to their “terrain”. It is what it is. People live in the paved forest so it’s representative to a lot of people.
I don’t think they’ve done a very good job maintaining MADIS in the last couple of years either. No proof on that, but I see a lot of analysis errors when I check my site.
Some of that is going to be the EWR concrete jungle influence giving them higher readings versus surrounding towns with more vegetation. MADIS will almost always think they’re too high. I haven’t followed them enough to get a feel if they’re running higher than normal though. Put up a bunch of U90s in a row down there and EWR will be 100+ on most of those days.