Much of central Saskatchewan was under an extreme wind chill warning Monday morning as an Arctic air mass and moderate winds combined to make the temperature feel colder than -40 C.

Saskatoon residents were greeted by a temperature of -30 C when they woke up Monday morning, but winds of approximately 20 km/h made it feel like -43 C with the wind chill.

Environment Canada says an Arctic air mass combined with the wind is creating high wind chills across much of south Saskatchewan Monday morning.

Wind chill values in the -40 C to -43 C are forecast over the warning area Monday with conditions forecast to improve later in the morning.

Environment Canada warns that frostbite on exposed skin may occur in less than 10 minutes when the wind chill reaches extreme values.