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If any one is interested the hourly PSI is published here :

http://www.nea.gov.sg/psi/

The 200+ pmi range sucks, but is pretty normal in places like Beijing. Thankfully it's spring and we are under 100 most days. In the worst of winter, we were at 700+, think 2.5x as bad as Singapore right now.

While not as bad as Beijing, 24 hour PM2.5 is also in the high 200s, making it Heavily Polluted/Hazardous. My parents are elderly; my father has suffered strokes before and I'm not taking any chances.

http://epi.yale.edu/community/blog/2013/01/18/beyond-crazy-b...

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