Topics Climate Statistics
Nationwide Record Highs vs. Record Lows
The analysis compiles daily temperature records for the United States since 1920, and shows the percentage of records in each decade that were hot or cold.
National: graphs of global temps by month
The last five years have been the hottest five in recorded history
Local: records by decade
Take a look at how record high temperatures have compared to record lows in your city.
Summer Nights are Warming Across the U.S.
Summer minimum temperatures are warming fast across the U.S. — leading to added health risks and higher energy costs
How Summer Nights are Changing In Your Area
Is the summer heat making it hard to sleep? Here’s how the summer minimum temperatures have been changing in your city.
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.
2019 Global Temperature Anomalies Through June
While U.S. temperatures have been relatively mild this year, the rest of the world has endured near-record heat.
Featured Research
