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    When could air quality across parts of the U.S. improve?

    03:23
  • Air quality and weather forecast for Thursday, June 8

    02:10
  • Canada's uncontrolled wildfires spread across the country

    01:03
  • New York City mayor urges residents to stay indoors due to 'hazardous' air quality

    00:54
  • How to better protect yourself from the health effects of wildfire smoke

    03:31
  • US skies filled with haze from Canada wildfires

    05:44
  • New York City afternoon skies get an orange tinge due to Canadian wildfires

    00:44
  • Parts of Florida under flood alert as Arlene brings heavy wind and rain

    01:32
  • Texas slammed with severe weather and tornadoes

    01:51
  • Western Texas slammed with severe flooding

    01:32
  • Air quality concerns rise in US amid Canadian wildfires

    02:00
  • Canadian wildfires prompt air quality advisories in US

    01:48
  • State Farm no longer accepting property insurance applications in California

    01:59
  • Memorial Day weekend forecast: Where will it rain?

    01:31
  • Massive typhoon slams Guam

    01:14
  • Typhoon Mawar barrels into Guam as a powerful Category 4 storm

    00:49
  • Guam prepares for typhoon Mawar

    00:55
  • One child dead, one missing after falling into California river

    01:43
  • Memorial Day weekend: Officials prepare for travel influx

    03:46
  • Cellphone video captures landslide during northern Italy's deadly floods

    01:23

Dramatic NYPD roof rescue caught on video

00:23

Amazing footage shows New York Police rescue crews plucking five adults and one child from rooftops in a flooded section of Staten Island. NBC’s Lester Holt reports.