sweltry vs sweltering

sweltry and sweltering both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sweltry	No	Yes	No	No
sweltering	No	Yes	No	No

As adjectives, sweltry and sweltering are synonyms defined as:

sweltry and sweltering: excessively hot and humid or marked by sweating and faintness

sweltry (adjective)	sweltering (adjective)
excessively hot and humid or marked by sweating and faintness	excessively hot and humid or marked by sweating and faintness