Weather

With Earth breaking average heat records, cities are sure to be giving a fresh look at their readiness plans for temperatures that can kill.

Downpours that could produce flash flooding will be the main threat.

The planetary average hit 63 degrees Fahrenheit, surpassing the 62.9-degree mark set Tuesday and equaled Wednesday, according to data from a University of Maine tool.

For two straight days, the global average temperature spiked into uncharted territory.

Under a Code Orange, air quality may be unhealthy for vulnerable groups such as children, people with asthma, people with heart or lung disease, and older adults.

Dangerous heat and elevated risks of wildfires are present in parts of the West, with climate change and El Niño both playing a role.

Storms Sunday will be capable of producing damaging wind gusts up to 70 mph, hail and flooding downpours.

Summer is barely underway, but temperatures in the U.S. are already reaching levels dangerous to human health.

Under a Code Red, air pollution concentrations are considered unhealthy for the general population and outdoor activity should be avoided.

Many camps in the Midwest and the East have been moving activities indoors, seeking advice from medical professionals and hoping the air quality improves soon.

Between the 235 out-of-control Canadian wildfires and unstable weather patterns responsible for these meteorological mishaps, climate relief will be few and far in between.

City departments in Philadelphia are urged to allow employees who can work indoors to do so. Public pools will also be closed for the day.

Scientists say worsening heat waves have a clear link to climate change. This year, a seasonal El Niño pattern will also be adding fuel to the fire.

Wildfires continue to rage across Canada, with hundreds burning and more than half out of control.

The number of delays and cancellations at the Philadelphia International Airport are continuing to fluctuate Tuesday after weather disruptions began Monday.