((DEAD LINK--TO BE UPDATED)) Carbon Dioxide Information Analysis Center
Observational and model-generated data related to climate change. Managed by the U.S. Department of Energy's Oak Ridge National Laboratory.
A multipurpose, independent, global database of human emissions of greenhouse gases and air pollution on earth, managed by the European Commission and the Netherlands Environmental Assessment Agency. Datasets range between 1970 to 2020, and cover not just European data, but also data from around the world.
1893-present. Historical weather data for several dozen Iowa locations.
Data on climate and weather events from the U.S. National Oceanic and Atmospheric Administration (NOAA).
((DEAD LINK--TO BE UPDATED)) U.S. Environmental Protection Agency (EPA) Data Finder
Dozens of databases with information on air quality, water quality, pollution, Superfund sites, and more.
Water quality information and surface and ground water levels from the U.S. Geological Survey.
Statistics and data on land use, water use, agriculture, fisheries, forestry, nutrition, and food aid. Also includes a spatial database of agricultural land-use data with online mapping capabilities.
((DEAD LINK--TO BE UPDATED)) World Bank Climate Change Data
AirNow.gov -- Developed by the US Environmental Protection Agency, National Oceanic and Atmospheric Administration (NOAA), National Park Service, and tribal, state, and local agencies to provide real-time access to national air quality information. Data is collected and displayed "as soon as practical" after the end of each hour.