How to connect an external pollution sensor

Hello,

I’m new with Home Assistant and I’d like to connect an outdoor sensor which can measure the air pollution. I’ve found some but most of them are made for an indoor usage. This is because the sensor is very sensible to the humidity.

Does anyone has link to such sensor or ideas on how to do this ?

Thanks for your help.
Best regards, Sebastien VINOT

There’s this integration that does not require any hardware:

Though they do also sell hardware if you want to add your exact location to their database: GAIA Air Quality Sensors