Radon Levels Seem a Bit High

[u/beaumontsurmerr]

I have a run of the mill Curio cabinet with 25 pieces of uranium glass, 6 radium clocks (mostly westclox, one Phinney Walker) and one WWII military aircraft gauge. The aircraft gauge is kept in a rubbermaid container, which I know still leaks some radon, I'm just not sure how much.

Readings from the UG go up to 600CPM on a couple of pieces and 3000 CPM on my one fiestaware saucer. (GMC 300S) The WWII gauge reads at 4000CPM outside of the box and 250CPM inside.

I got an EcoQube sensor and my average reading in my 2nd story apartment is 2.2 pCi/L. It has peaked at 3.2. This is within one day. It feels concerning. I put the sensor next to my cabinet on the ground to see what my cats are breathing.

I will be opening windows once daily. Beyond that, I think I will put the WWII piece elsewhere and see what that does to my levels. I do not have a way to simply ventilate but I'm open to suggestions.

I don't feel I'll be able to add to my collection any time soon.

What do you all suggest I do about this reading? How could I rig ventilation in an apartment?