Springtime ozone levels above western North America are rising primarily due to air flowing eastward from the Pacific Ocean, a trend that is largest when the air originates in Asia. These...

NOAA’s State of the Climate report shows the December 2009 average temperature for the contiguous United States was 30.2 degrees F, which is 3.2 degrees F below average. Last month’s average...

Integrated Surface Data

A database from the National Climatic Data Center of global hourly and climate observations compiled from numerous sources, into a single common ASCII format and common data model. Includes information such as wind speed and direction for 10,000 stations, with some dating as far back as 1901.

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