Environment Canada has issued an air quality advisory for Calgary due to wildfire smoke, and the heat warning from the city’s prolonged heat event remains.
Experts warn that the fine particles in wildfire smoke pose the main health risk. The tiny particulate matter contains a variety of toxic chemicals and compounds that can damage the respiratory system and enter the bloodstream, affecting the health of anyone, particularly the elderly, very young and those with chronic conditions.
It is recommended to limit time outdoors, and wear a respirator type mask if outdoor activities can not be avoided.
The wildfire smoke covering Calgary comes from fires burning the northern half of the province. As of Tuesday, there are 170 wildfires burning in Alberta, with 56 deemed out of control.
“We’re going to get a little bit smokier, I have concerns about the westerlies because the Kootenays are exploding (with wildfires) at this time,” said Brian Proctor.
The fire hazard across Alberta has also worsened considerably over the preceding 24 hours, with most of the province now listed as at extreme risk, including the mountain areas west of Calgary.
Temperatures in Calgary are expected to reach above 30 C on Wednesday, causing the ongoing heat warning to remain in place.
The high temperatures are expected to continue into the weekend, which could hinder firefighting efforts and keep the ignition risk elevated.
Local officials are keeping a close eye on the fire situation near the city, said Calgary Emergency Management Agency (CEMA) Chief Sue Henry.
But for now, she said the focus remains on areas threatened by fire, like Jasper, while CEMA stands ready to help with firefighters.
“We remain in contact with the province for any other (firefighting) resources,” said Henry.
With the potential of the wildfire smoke conditions worsening in Calgary and the continuing extreme heat, Henry reminded people to take precautions such as closing windows, avoiding strenuous activities and looking in on the most vulnerable, such as seniors and those with chronic health conditions.
“Take care of those most susceptible to health issues,” she said.
Environment Canada says the thick smoke in the city may cause temperatures to drop slightly, but still the combination of heat and smoke will increase health risks.
Calgary is also experiencing cloud coverage, though the UV index is expected to be high throughout the afternoon, so anyone spending time outside is reminded to protect themselves despite feeling covered by clouds and smoke.
With files from Bill Kaufmann