The only thing you really need to take away from here is that PM2.5 is the real killer. See here, here and here for evidence. NEA does publish PM2.5 readings, and PSI can take a back seat.
Update: Those who wish to protect themselves can take a look at how we are doing it here.
|"We can still go out". This sentiment seems pretty prevalent from what I can see. Never mind yesterday's PM 2.5 levels of above 200 micrograms per m³.|
"The PM 10 filter allows all particles PM 10 and below to go through, thus it includes [emphasis mine] the PM 2.5 reading as well."
|So what exactly does PSI measure now? In the past it used to measure a basket of pollutants such as sulphur dioxide, hydrocarbons, etc...|
|Not mine... In case you are wondering.|
|Tweets on PSI spiked to around 200,000 on June 19. Compare this with PM2.5 below|
|PM2.5 had just 450 mentions at its peak|
|It's telling that there has been a spike to 1800 mentions for "clear sky". "blue sky" has similar figures. Contrast this with PM2.5, which is what we should really worry about.|