3 ms·
Is the road or the school itself over the legal level of NO2? It does dissipate quite quickly, so it's important. Dust and particular matter scares are definit
by lambdadmitry 6y ago
Is the road or the school itself over the legal level of NO2? It does dissipate quite quickly, so it's important.
Dust and particular matter scares are definitely overblown. I live in zone 1, first floor with windows overlooking a small road, and I hardly ever saw PM25 level going over 2ug/m3 in a year I've measured it. Compare that to the safe long term exposure level of 10ug/m3 set by the WHO.