Hotter Summers Mean More Stagnant Air

Hotter Summers Mean More Stagnant Air

  • Published: Jul 24th, 2019

Hotter summers often lead to more stagnant air—trapping air pollutants that can cause health problems.

Nationwide Trends in Air Stagnation Since 1973

Nationwide Trends in Air Stagnation Since 1973

  • Published: Jul 24th, 2019

Since NOAA’s Index began in 1973, the number of annual stagnant days has increased in 83% of the contiguous U.S. cities analyzed.

More Extremely Hot Days (2019)

More Extremely Hot Days (2019)

  • Published: Jul 10th, 2019

Climate change is making summer scorchers all the more extreme—check the trend for area.

Daily Template: CO2 in the Context of Human History

Daily Template: CO2 in the Context of Human History

  • Published: Jul 2nd, 2019

This image puts today’s CO2 levels in historical context. Spoiler alert: we’re off the charts.

Daily Template: The Rise of CO2

Daily Template: The Rise of CO2

  • Published: Jul 2nd, 2019

CO2 has seasonal fluctuations but its stark, long-term rise is unmistakable.

More Acres Burned in Large Western Wildfires

More Acres Burned in Large Western Wildfires

  • Published: May 29th, 2019

As the number of large wildfires increases with climate change, so does the number of acres burned.

Hotter Years, More Large Western Wildfires

Hotter Years, More Large Western Wildfires

  • Published: May 29th, 2019

Hotter years have brought higher numbers of large western wildfires.

Large Western Wildfires on the Rise

Large Western Wildfires on the Rise

  • Published: May 29th, 2019

The number of large wildfires is on the rise in the West.