There is an air quality advisory for Saturday due to wildfire smoke in parts of Ontario. Environment Canada says wildfire ...

A regional air quality alert was issued for much of Southern California as harmful levels of fine particle pollution spread ...

A heat warning remains in effect for Sunday across much of Ontario, including the southern regions, with Environment Canada ...

NOACA says the warning comes in anticipation of 'ground-level ozone + fine particulate matter (residual firework smoke).' ...

A special air quality statement is in effect for most of Manitoba as wildfire smoke leads to poor air quality and reduced ...

The Mid-Ohio Regional Planning Commission has issued an Air Quality Alert for several central Ohio counties until midnight on ...

A code orange air quality alert means that air pollution concentrations may become unhealthy for sensitive groups, including ...

Delhi's air quality remains "satisfactory," with light rain recorded and a yellow alert for possible moderate rainfall on ...

Calgary has a network of air quality sensors spread throughout the city, and the public can access the network's readings to obtain crucial air quality information. Connor O'Donovan explains.

The heatwave that brought 100-degree temperatures to the Philadelphia region in June also brought warnings that the air ...