Brutkey

Marielle Quinton
@mariellequinton@ottawa.place

@CTHW@mstdn.ca No? That doesn't work at all here. For it to be 6 or would have to be around 150. 50 would absolutely be more like 2 or 3. There's provincial variation in the calculations. The BC protocol most provinces switched to last year has a step where they switch over to just PM 2.5 when it's higher than the classic AQHI. Here's some info about it https://www.cbc.ca/news/canada/british-columbia/smoke-hazards-eccc-1.7209312 Anyway, it's a 3 here right now, but purple air reports numbers in the 50s.

TomWilsonYEG
@CTHW@mstdn.ca

@mariellequinton@ottawa.place
To be a 6 the pm2.5 be 50+
But looking at and comparing the pm 2.5 with the AQHI+ in Ottawa doesn't fit.
I wonder why?

Marielle Quinton
@mariellequinton@ottawa.place

@CTHW@mstdn.ca Yeah, I wish they'd tell us more specifically somewhere. Like, reading a CBC article is ok but environment Canada should have a link explaining the value exactly. It's hard to know how much to trust it.

TomWilsonYEG
@CTHW@mstdn.ca

@mariellequinton@ottawa.place

This is the explanation from PurpleAir. The URL's embedded just explain what the AQHI+ means not how it's arrived at.