Thursday begins on a very warm and smoky note across most of Western Pennsylvania and Northern West Virginia. Wildfire smoke and haze have mixed down to this surface, resulting in code yellow to code orange air quality, meaning that the condition of the air is unhealthy for those with any underlying health conditions.

Smoke from Canadian wildfires will continue to give us a hazy sky over the next couple of days. No air quality alert has been issued; however, those who are unusually sensitive to respiratory ailments should limit overexertion outside this afternoon and evening.

The National Weather Service has issued a "hazardous weather outlook" for the Pittsburgh area beginning Tuesday, due to the chance of haze and poor air quality from Canadian wildfire smoke.