EarthNow - climatic data from NASA
Earth Data - real-time comparisons & visualizations
NASA Eyes - Visualization of world wide environmental phenomena
Windy - wind, rain, snow, temperature, dew point, humidity, pressure, clouds, waves, pollutants
Ventusky - weather data
Images of Change - Global Climate Change
Digital Coast - Sea Level Rise Viewer
Google Earth - 3D visual data
USGS - Earthquake data
Earth's Carbon Dioxide (NASA simulation) - local version
Historic Trends in carbon dioxide (Gapminder)