Can you share any thoughts on a similar DIY project for outdoor air monitoring?

I.e. is it feasible to make something battery powered and connected to an indoor base station or gateway via some low power radio link (bluetooth low-energy? z-wave?). Would these same sensors work outdoors or quickly fail due to harsh environment?

How complex would it be to make a housing that is sufficiently weather proof yet coupled to the environment to read ambient environmental conditions? I can imagine sun exposure, wind, high dust loads, rain, and condensing humidity all being very challenging for a DIY device to stick out in a yard or balcony.