You can integrate Netatmo via IFTTT, that’s fairly popular.
Amazon carries them, so that part’s easy. But I believe the indoor air quality sensor is only sold as a set on Amazon with the outdoor weather sensor, so the price is high.
https://www.amazon.com/Netatmo-NWS01-Weather-Station/dp/B0095HVAKS/
You can buy just the indoor sensor directly from that netatmo if that’s all you need:
https://shop.netatmo.com/en-us/aircare/home-coach/homecoach
There may be other air quality sensors that also work with Ifttt, I’m not that familiar with the category. 