3 ms·
As I mentioned in the article it really depends on the length of the exposure and how you use the sensor. Yes in many places in Europe or North America, the ou
by ahaucnx 5y ago
As I mentioned in the article it really depends on the length of the exposure and how you use the sensor.
Yes in many places in Europe or North America, the outdoor air quality is most of the time good.
However -unfortunately- there are also many places where the outdoor air quality is very unhealthy most year round and then an annual exposure to 35 μg/m³ vs 5 μg/m³ makes a big difference.
- aaron695 5y ago> the outdoor air quality is most of the time good. This is the point, knowing when it's bad so you can change behaviour? When does it spike in a forest? You'd guess when it's windy? But is it seasonal? Does dust matter more the pollen, I think pollen is more PM 10. Salt from the sea breeze is bad (PM2.5), how does that mix with leaf matter in Fall? > Indoor PM2.5 can often be higher than outdoor so that the yearly average will be pushed down by time spent outside and there is no need to have <5 μg/m³ inside too. This line form OP is totally incorrect. Indoors should be less than outdoors, unless you have a fire or smoke indoors. And why does "yearly average" matter? Smoking cigarettes (which is exactly the same as what we are talking about) is not about a "yearly average".