Topics Weather
Hotter Summers Mean More Stagnant Air
Hotter summers often lead to more stagnant air—trapping air pollutants that can cause health problems.
Nationwide Trends in Air Stagnation Since 1973
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)
Climate change is making summer scorchers all the more extreme—check the trend for area.
Daily Template: CO2 in the Context of Human History
This image puts today’s CO2 levels in historical context. Spoiler alert: we’re off the charts.
Daily Template: The Rise of CO2
CO2 has seasonal fluctuations but its stark, long-term rise is unmistakable.
More Acres Burned in Large Western Wildfires
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 have brought higher numbers of large western wildfires.
Large Western Wildfires on the Rise
The number of large wildfires is on the rise in the West.
