These two fit:
MUGGISH, MUGGY, a. 2. Moist; damp; close; warm and unelastic; as muggy air. [This is the principal use of the word in America.]I found Websterisms yesterday in a campus bookstore in a nearby city, marked down from $23.95 to $5.00. The bookstore seems to be divesting itself of books: perhaps three-quarters of the stock was shelved as Bargain Books. The non-bargain shelves had the familiar look of the dying bookstore: books turned face front, with six or eight inches of empty space between them. Stranger still: Websterisms had a Daedalus sticker on its cover. I asked two employees what was going on: one was new and had never seen things looking different; another said that people mostly go for New York Times bestsellers. Yes, I wanted to say, but it’s a college bookstore. Or was.
From Websterisms: A Collection of Words and Definitions Set Forth by the Founding Father of American English, ed. Arthur Schulman (New York: Free Press, 2008). An entry from Noah Webster’s American Dictionary of the English Language (1828). Websterisms compiles 500 entries from the dictionary.
It was a muggy day.
You can search the 1828 dictionary online, courtesy of the University of Chicago.
[The Oxford English Dictionary dates muggish to 1655; muggy, to 1728. Where do the words come from? Muggy comes from mug, “a mist, a fog; light rain or drizzle; a dull, damp, or gloomy atmosphere.” Mug, says the OED is “apparently” the source for muggish too, though the first citation for this meaning of the noun (also 1728) postdates the first citation for the adjective.]