Climate Change

A scientific look at global change.
Climate Change Evidence At A Glance
Global Surface Temperature
Data source: NOAA
Atmospheric CO2
Data source: NOAA
thousands of years ago
Sea Level
Data source: CLS/Cnes/Legos
Arctic Sea Ice (September)
Surface Temperature CO2 Sea Level Sea Ice
Climate Change News
By John Upton
May 4, 2015
Global warming could cause one in six species to go extinct, a new study shows.
By Michael D. Lemonick, Climate Central
April 27, 2015
The frequency of extreme heat and heavy rain events is expected to double by 2100.
By Andria Stark
April 22, 2015
In celebration of Earth Day, Weather Underground has launched a microsite dedicated to discussing the science behind protecting our planet.
Feeling Skeptical?
Climate Change Facts
Local Climate Change
Temperature Precipitation Snowfall*

Climate Change Blogs

Why I Support Student Fossil-Fuel Divestment Campaigns
By: Dr. Ricky Rood
Published: Máj 2, 2015
The divestment argument stands on a foundation of knowledge; it is fundamentally responsible and its long-term goals are underrepresented and essential.
A positive spin on Earth Day from WU
By: Dr. Jeff Masters
Published: Apríl 22, 2015
We’re highlighting a wide range of these good-news stories in a special WU microsite created in honor of Earth Day. The theme is progress: through a collection of articles by researchers, field experts, and scientists, the microsite outlines the current state of our climate, how humans can adapt in coming years, and the various ways that we can minimize the damage to our planet's precious ecosystem.
Carbon Dioxide Hits a New Peak this Spring: 404 ppm
By: Dr. Jeff Masters
Published: Apríl 21, 2015
Weekly carbon dioxide measurements from the pristine air atop Hawaii’s Mauna Loa have just topped another predictable yet worrisome milestone: 404 parts per million. By all evidence, we now have the largest amount of CO2 present in Earth’s atmosphere for at least the last 800,000 years, and probably several million.
Wunderground's Climate Change Position
Based on the evidence, more than 97% of climate scientists have concluded that human-caused climate change is happening. Climate change is already causing significant impacts to people and ecosystems, and these impacts will grow much more severe in the coming years. We can choose to take economically sensible steps to lessen the damage of climate change, and the cost of inaction is much higher than the cost of action.
Climate Summary
State of the Climate
March 2015: Another Warmest Month on Record for the Planet

March 2015 was the warmest March since global record keeping began in 1880, said NOAA. March 2015's warmth makes the year to date period (January - March) the warmest such period on record, and the past twelve months the warmest twelve-month period in recorded history. Seven of the past eleven months (May, June, August, September, October, and December 2014, along with March 2015) have tied or set new record high monthly temperatures.