National Aeronautics and Space Administration (NASA)

AirNow is a one-stop source for air quality data, including current and forecast air quality maps and data for more than 500 cities across the U.S., as well as Canada and Mexico. 

NASA/USDA provides access to Evaporative Stress Index (ESI) data products - a drought index based on remotely sensed evapotranspiration (ET).

Groundwater and soil moisture drought indicators based on terrestrial water storage observations derived from GRACE satellite data and integrated with other observations, produced each week by NASA

NASA’s Short-term Prediction and Transition Center – Land Information System (SPoRT-LIS) provides high-resolution (about 3-km) gridded soil moisture products in real-time to support regional and lo

NLDAS Drought Monitor Products: an experimental drought monitor derived from near real-time soil moisture output from both the NASA MOSAIC and NCEP Noah land surface models.

Quick Drought Response Index (QuickDRI): a geospatial tool that characterizes the intensification of short-term drought condition patterns on a weekly basis across the continental United States (CO

The Soil Moisture Active Passive (SMAP) mission is an orbiting observatory that measures the amount of water in the top 5 cm of soil everywhere on the Earth’s surface every 3 days.