I'm only in my late 20s and even I've noticed a huge difference in summer air clarity the past 5-ish years compared to growing up in the late 90s/00s. Code red and orange days were pretty regular and would often last for days in a row. That combined with mild asthma really made me hate summer sports. I can't remember a stretch like those recently though.
DCA reported Mod Snow at the onset of precip. There's a sudden temp/dew drop, pressure jump, and then a subsequent rebound around the same time. What am I seeing here, computer error? Glitch in the matrix?