4 ms·
I use US AQI, and hadn't really realized that many countries have their own measurement. I also usually look at µg/m3 of PM2.5, which is a universal standard, b
by yosito 3y ago
I use US AQI, and hadn't really realized that many countries have their own measurement. I also usually look at µg/m3 of PM2.5, which is a universal standard, but of course doesn't tell the whole story of air quality.