PM2.5 is a particulate air pollutant that poses a major health concern to humans. They are tiny pollutants measuring 2.5 microns and below. PM2.5 can enter deep into the lungs and the blood stream. Prolonged exposure to PM2.5 can cause health effects like respiratory and cardiovascular diseases. Learn more about PM2.5, the best way to protect yourself from PM2.5 and other trends here.
A while back, I posted data I collected from places around Beijing showing that indoor air is consistently cleaner than outdoor air. When I analyzed that data, I excluded places that allow smoking, but I’m posting the data here now: Even on days where outside air was bad (AQI ~ …
