CALGARY -- It’s a repeat, but with a slight change: Environment Canada’s Firework model from 6 pm yesterday:

Environment Canada, air quality index, Sept. 17 Environment Canada, air quality index, Sept. 17

Our upper air for today has Calgary beneath a ridge of high pressure, which is expected to cascade eastward. As it moves, so too does the southerly wind that forms it, which means tomorrow and Saturday could be quite smoky, with a minimal chance showers help abate those conditions.

Then, into early next week, southwesterly flow achieves the same effect; another highway of air aloft will bring about smoke potential. I say potential because of some showers working toward coastal Oregon and Washington, which may have a marginal effect on reducing the effects of wildfires to our southwest.

From a temperature perspective, we’re holding relatively steady near our seasonal values, in spite of the diffusion from this weak layer of smoke scattering some sunlight. At best, we’ll see a half-millimetre of showers Saturday and only a couple of millimetres Sunday, which won’t do much to our temperatures.

Here’s the five-day forecast:


  • Mainly sunny, some smoke
  • Daytime high: 19C
  • Evening: smoky, partial cloud, low 8C


  • Mainly sunny, smoky
  • Daytime high: 21C
  • Evening: some showers, low 11C


  • Early showers, smoky
  • Daytime high: 20C
  • Evening: building showers, low 10C


  • Early showers, clearing
  • Daytime high: 17C
  • Evening: showers, low 9C


  • Partly cloudy, smoky
  • Daytime high: 17C
  • Evening: clear, low 6C

Dororthy was surely looking forward to a quiet coffee out back one morning, but unfortunately, the patio was already occupied!

Dororthy, Millarville, moose,

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