The 10 Hottest U.S. Years on Record

Some cities had their hottest year on record, including Albuquerque, Cleveland, Dallas, Phoenix, and Tampa. Moreover, the U.S. is having its warmest consecutive 24, 36, and 48 months on record, with more than 33,000 record highs set in each of the last three years. This total dwarfs the number of record lows set in that three-year period at a rate

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Here’s Where Winters Are Warming the Most

Winters are warming across the U.S., and in some locations, the warming is dramatic. The Northern Plains, Great Lakes, and the Northeast are warming the fastest, while warming is taking place at a slower rate in the western U.S. In parts of Minnesota, Wisconsin, and northern New England winters have warmed at an average rate of more than 1°F per

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2017 Was the Year of the Billion-Dollar Disaster

Rather than one type of event focused on one part of the country, this year’s disasters were spread over several regions. Climate change may have worsened some of the events this year, including drought in the northern Plains and wildfires in the West. In a warming world, soils dry out more from evaporation, making droughts worse and further drying

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North American Snow Cover on the Decline

As the world warms, the overall area of North America covered by snow is decreasing. One reason is because an increasing percentage of winter precipitation is falling as rain instead of snow in many locations. A Climate Central report found that between sea level and 5,000 feet in elevation across the Western U.S., a smaller percentage of winter

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Daily Record Highs are Dramatically Outpacing Daily Record Lows

Daily record highs are vastly outpacing daily record lows in the U.S. We will always have warm years and cold years, but in a world without global warming, those warm and cold years would balance over time. However, that’s not what we are seeing. According to the 2017 U.S. Climate Science Special Report, after a rigorous reanalysis of GHCN stations

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Climate Indicators

Learn more about the 10 key indicators of a warming climate

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Arctic Sea Ice

Ice has both ecological and economic benefits and its extent could influence weather around the world.

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El Niño

El Niño is a warming of waters in the equatorial Pacific that influences global weather patterns.

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Ocean Acidification

Acidifying oceans can hurt coral reefs and shellfish as well as the people that rely on them for their livelihoods.

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Carbon Dioxide

CO2 is a potent greenhouse gas and plays a vital role in regulating Earth's surface temperature through radiative forcing and the greenhouse effect

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Extreme Heat

Increasing frequency and magnitude of extreme heat can affect health, power usage and more.

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Snow Cover

A shorter snow season increases the amount of sunlight absorbed by the Earth’s surface and can further warm the planet.

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Sea Level Rise

Sea level rise could force millions to leave coastal areas and cost the world trillions of dollars.

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Land Ice

Melting land ice contributes to sea level rise.

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U.S. Wildfires

Wildfires damage forests and release CO2.

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Global Temperature

The global temperature is the clearest measure of how human greenhouse gas emissions are affecting our planet.

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