This looks good, but this is an outdoor weather station. OP is asking for an indoor air quality monitory.
I replied with an indoor no-DIY suggestion and code at top level: https://news.ycombinator.com/item?id=33774695
> I actually wrote a book on this topic earlier this year. It walks you though setting up a weather station...
... and replied to this from immediately above with a similarly no-DIY weather option.