(CNN) — As the United States celebrates its 250th birthday, firework celebrations are expected to bring more pomp and circumstance than ever before. But with bigger festivities and an oppressive heat ...

(CNN) — Yet another brutal heat dome is set to roast part of the United States starting this weekend as part of a major weather pattern change. The East Coast was in the hot seat last week and the ...

(CNN) — Wildfires are expected to bring unhealthy air to more than 120 million people this weekend, but the smoke and its toxic particles may not always be clearly visible. Some skylines are shrouded ...

(CNN) — Thick, choking plumes of smoke from wildfires in Canada are pouring into major cities across the Midwest, Northeast and mid-Atlantic, bringing dangerous air quality to more than 100 million ...

(CNN) — Rounds of storms dumped rain on the Northeast and Mid-Atlantic Thursday, setting off flash flooding in parts of the already-soaked regions. Stalled storms over southwestern New Jersey dropped ...