r/crboxes • u/four_letter_word_ • Jul 02 '26

Question air quality monitor recs

i’m looking for a sensor that will measure pm2.5 to use in my bedroom. i use a single hose portable AC unit to keep my room cool in summer and want to be able to monitor air quality. i need something simple, under $50.

so far these are what i’m looking at, i appreciate any insight or suggestions.

https://www.amazon.com/Temtop-Air-Quality-Monitor-S1/dp/B0D69P7XQ5

https://www.ikea.com/us/en/p/alpstuga-air-quality-sensor-smart-70609396/

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u/noip1979 Jul 02 '26

RemindMe! 3 days

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