Extreme temperature warnings in place as ‘heat dome’ bakes US

Americans warned to be on alert for heat-related illness as parts of country experience record high temperatures Extreme heat warnings are in place for large swaths of the United States this week, as an unusual weather pattern eclipses record temperature highs. In Billings, Montana, residents experienced a sweltering 111F (43.9C) on Sunday, the hottest day in its history. Salt Lake City in Utah also hit an all-time record high on Sunday at 109F (42.8C). Boston has seen more 90F (32.3C) days…