3 ms·

I have noticed every time I open my windows, the no2 levels reported on my Dyson filter spike. Not sure what to make of it but it’s interesting.

• clairity 5y ago
  nox is a combustion byproduct so probably that?
  • lmm 5y ago
    Yeah I would assume it was coming mostly from nearby cars.
    • PurpleFoxy 5y ago
      The crazy thing is there are no nearby cars. There is a highway about 1.5km away which I assume it must all blow from. There is nothing else within 1.5km