Canadian wildfire smoke has triggered air quality alerts across several U.S. states, with health warnings issued.

Canadian wildfire smoke is expected to spread toward the Northeast, but will it reach as far south as Washington DC? Here's ...

Wildfires in Canada, the United States and Mexico often send smoke throughout the continent. Follow our latest coverage here.

The strip of dense wildfire smoke can be seen on satellites stretching from the Upper Midwest and Canada, across the Great ...

Night - Partly cloudy. Winds E at 6 mph (9.7 kph). The overnight low will be 59 °F (15 °C). Mostly cloudy with a high of 71 °F (21.7 °C). Winds variable at 6 to 7 mph (9.7 to 11.3 kph). Cloudy today ...

The National Weather Service has extended Heat Advisories and Extreme Heat Warnings through Wednesday evening for most of ...

Night - Mostly cloudy with a 49% chance of precipitation. Winds NNW at 7 mph (11.3 kph). The overnight low will be 43 °F (6.1 °C). Partly cloudy with a high of 49 °F (9.4 °C) and a 51% chance of ...