Alberta Environment and Parks is forecasting a moderate risk today in the Air Quality Health Index (AQHI) and it's expected to climb to the high risk category tomorrow.

Fires in central British Columbia continue to generate a huge amount of smoke that is expected to cross the Rockies today, according to Environment Canada. The smoke will remain over western and central Alberta until at least Thursday afternoon or evening, when thunderstorms may flush out some of the smoke.

Individuals may experience symptoms such as increased coughing, throat irritation, headaches or shortness of breath. Children, seniors, and those with cardiovascular or lung disease, such as asthma, are especially at risk.

Wearing a mask during a smoke event is not a good idea, warns Environment Canada. In fact, masks may lead to a false sense of security, which may encourage increased physical activity and time spent outdoors, meaning increased exposure to smoke. They can also make breathing more difficult.

The Calgary region is being impacted but not to the extent of the Grande Prairie and Edmonton regions, where it is forecasted to climb to the very high risk category tonight.

Hourly air quality updates are available here.