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Humidity Data Access and Tools

NASA’s humidity data range from hourly primary forcing data to modeled data based on measurements from high-altitude aircraft. Our datasets and tools help users find and integrate the data they need to see how humidity influences weather, ecosystems, and how we live our lives.

Humidity Datasets

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Dataset Version Platform Instrument Temporal Extent Spatial Extent Spatial Resolution Data Format
PEM West B Ground Data 1 GROUND STATIONS NDIR GAS ANALYZER, GAS CHROMATOGRAPHS, CHEMILUMINESCENCE, RAWINSONDES, OZONESONDES, GC-ECD, ION CHROMATOGRAPHS 1991-02-22 to 1995-01-01

N: 52.92 S: 21.33 E: 180 W: -180

GTE
PEM West B In-Situ DC-8 Meteorology and Navigation Data 1 NASA DC-8 DADS 1994-01-26 to 1994-03-15

N: 90 S: -9.7 E: 180 W: -180

GTE
PISTON 2018 Research Vessel (RV) Mirai Ship Data 1 R/V Mirai RADAR, RAWINSONDES 2018-08-13 to 2018-09-02

N: 33.48 S: -1 E: 156.1409 W: 120.43

ASCII, TAR
PISTON 2018 Research Vessel (RV) Thompson ship datasets of ocean, atmosphere, and air-sea interaction 1 R/V Thompson SEA-POL, CTD, ADCP, CHAM, SO, ROSR, W-Band Radar, CEILOMETERS, RADIOMETERS, RAWINSONDES, DISDROMETERS, GPS, Hemisphere VS1000, Gill WindMaster Pro, Vaisala HMT330, ORG-815-DA, Vaisala PTB330, NOAA PSL Sea Snake, SBE-21, Riegl LD90-3100VHS-FLP, Eppley PIR, Vaisala HMT337 2018-08-18 to 2018-10-13

N: 22.7 S: 7.3 E: 136.997 W: 120.06

netCDF-4, Text File, TAR
PISTON 2018-2019 Island Rawinsonde Data 1 GROUND STATIONS RAWINSONDES 2018-08-13 to 2019-10-13

N: 22.701 S: 7.34 E: 144.7939 W: 114.3

ASCII
PISTON 2019 Research Vessel (RV) Sally Ride Data 1 R/V Sally Ride CTD, ADCP, SEA-POL, CHAM, SO, ROSR, HSRL, W-Band Radar, CEILOMETERS, RAWINSONDES, DISDROMETERS, LIDAR, GPS, Hemisphere VS1000, Gill WindMaster Pro, Vaisala HMT337, Vaisala HMT330, ORG-815-DA, Vaisala PTB330, NOAA PSL Sea Snake, SBE-21, Riegl LD90-3100VHS-FLP, Eppley PIR 2019-08-31 to 2019-09-26

N: 21.41 S: 14.98 E: 130 W: 125.628

NetCDF-4, TAR, Text File
POLARIS Balloonsondes and Ozonesondes Data 1 BALLOONS OZONESONDES 1996-10-29 to 1997-10-29

N: 82.6 S: 52.3 E: -62.3 W: -147.71

AMES
PREFIRE Auxiliary Meteorology Data for PREFIRE Satellite 1 version R01 R01 PREFIRE-SAT1 TIRS-PREFIRE 2024-07-24 to Present

N: 84 S: -84 E: 180 W: -180

netCDF-4
PREFIRE Auxiliary Meteorology Data for PREFIRE Satellite 2 R01 R01 PREFIRE-SAT2 TIRS-PREFIRE 2024-06-29 to Present

N: 84 S: -84 E: 180 W: -180

netCDF-4
Puerto Rico Radiosondes CPEX-AW V1 1 GROUND STATIONS RADIOSONDES 2021-08-24 to 2021-09-28

N: 18.4477 S: 17.8794 E: -67.0027 W: -67.6051

CSV
QuikSCAT ESDR Level 2 Ancillary Ocean Surface Fields Version 1.1 1.1 MODELS, QUIKSCAT Computer, SEAWINDS 2000-06-01 to 2009-11-22

N: 90 S: -90 E: 180 W: -180

12.5 Kilometers x 12.5 Kilometers netCDF-4
Radiosondes CPEX-CV 1 GROUND STATIONS RADIOSONDES 2022-09-01 to 2022-09-29

N: 16.789384 S: 0.053658 E: -0.073876 W: -23.400798

netCDF-4
RI CPEX 1 GCOM-W1, GPM, DMSP 5D-3/F16, DMSP 5D-3/F18 AMSR2, GMI, SSMIS 2017-05-24 to 2017-07-16

N: 47.73 S: -2.1 E: -25.2 W: -120.17

RM-OBS/PU Potential Evapotranspiration and Supporting Forcing L4 3-hourly 0.25x0.25 degree V001 (PET_PU_3H025) 001 RM-OBS/PU NOT APPLICABLE 1984-01-01 to 2006-12-31

N: 90 S: -60 E: 180 W: -180

0.25 Decimal Degrees x 0.25 Decimal Degrees
RM-OBS/PU Potential Evapotranspiration and Supporting Forcing L4 3-hourly 0.25x0.25 degree V002 (PET_PU_3H025) 002 RM-OBS/PU NOT APPLICABLE 1984-01-01 to 2016-12-31

N: 90 S: -60 E: 180 W: -180

0.25 Decimal Degrees x 0.25 Decimal Degrees
SAFARI 2000 ETA Atmospheric Model Data, Wet and Dry Seasons 2000 1 NOT APPLICABLE NOT APPLICABLE 2000-02-01 to 2000-09-30

N: -9 S: -53 E: 53 W: -13

Shapefile
SAFARI 2000 JRA Aerocommander Trace Gas, Aerosol, and CCN Data, Dry Season 2000 1 AC-680E IR CO2 ANALYZER, HUMIDITY SENSORS, THERMOCOUPLES, PRESSURE SENSORS, CNC, UV OZONE DETECTORS, CHEMILUMINESCENCE, FLUORESCENCE SPECTROSCOPY 2000-08-15 to 2000-09-07

N: -17.8293 S: -30.1916 E: 33.1635 W: 22.156

ASCII
SAFARI 2000 JRB Aerocommander Trace Gas and Aerosol Data, Dry Season 2000 1 AC-680E IR CO2 ANALYZER, HUMIDITY SENSORS, THERMOCOUPLES, PRESSURE SENSORS, CNC, UV OZONE DETECTORS, CHEMILUMINESCENCE, FLUORESCENCE SPECTROSCOPY 2000-08-15 to 2000-09-07

N: -17.8293 S: -30.1916 E: 33.1635 W: 22.156

ASCII
SAFARI 2000 Kalahari Transect CO2, Water Vapor, and Heat Flux, Wet Season 2000 1 FIELD INVESTIGATION, FIXED OBSERVATION STATIONS TDR, THERMOCOUPLES, SOIL HEAT FLUX TRANSDUCER, INFRARED THERMOMETERS, TEMPERATURE SENSORS, SONIC ANEMOMETER, IR CO2 ANALYZER, NET RADIOMETERS, HUMIDITY SENSORS 2000-03-01 to 2000-03-19

N: -15.438 S: -24.164 E: 23.594 W: 21.713

Shapefile
SAFARI 2000 Meteorological and Flux Tower Measurements in Maun, Botswana, 2000 1 FIXED OBSERVATION STATIONS, FIELD INVESTIGATION PYRANOMETERS, IRGA, PRESSURE TRANSDUCERS, TEMPERATURE PROBES, RTD, ANEMOMETERS, LICOR QUANTUM SENSOR, RAIN GAUGES, HUMIDITY SENSORS, SOIL MOISTURE PROBE, THERMOMETERS 2000-02-01 to 2000-09-30

N: -19.9 S: -19.9 E: 23.55 W: 23.55

Shapefile
SAFARI 2000 Meteorological Tower Measurements, Kruger National Park, 2000-2002 1 FIXED OBSERVATION STATIONS PYRANOMETERS, HUMIDITY SENSORS, RAIN GAUGES, WIND VANES, ANEMOMETERS, LICOR GAS EXCHANGE SYSTEM, TEMPERATURE PROBES 2000-02-15 to 2002-12-31

N: -25.0197 S: -25.0197 E: 31.4969 W: 31.4969

Shapefile
SAFARI 2000 MODIS Water and Heat Fluxes, Maun, Botswana, Dry Season 2001 1 FIXED OBSERVATION STATIONS, FIELD INVESTIGATION, Terra, MODELS PRESSURE SENSORS, WIND MONITOR, HUMIDITY SENSORS, NET RADIOMETERS, EDDY CORRELATION DEVICES, SOIL HEAT FLUX TRANSDUCER, MODIS, Computer 2001-09-02 to 2001-09-29

N: -17.9946 S: -21.0004 E: 24.5004 W: 21.4946

Shapefile
SAFARI 2000 SHADOZ Ozonesonde Data, Zambia and Regional Sites, Dry Season 2000 1 BALLOONS OZONESONDES, HUMIDITY SENSORS, RADIOSONDES 2000-08-01 to 2000-11-30

N: -7.98 S: -7.98 E: 55.48 W: 55.48

Shapefile
SAFARI 2000 Surface Atmospheric Radiative Transfer (SMART), Dry Season 2000 1 GROUND STATIONS TEMPERATURE SENSORS, BAROMETERS, Pyrgeometer, PYRHELIOMETERS, PYRANOMETERS, HUMIDITY SENSORS 2000-08-15 to 2000-09-17

N: -24.969 S: -24.969 E: 31.593 W: 31.593

Shapefile
SAFARI 2000 Upper Air Meteorological Profiles, Skukuza, Dry Seasons 1999-2000 1 BALLOONS RADIOSONDES 1999-08-14 to 2000-09-23

N: -24.969 S: -24.969 E: 31.593 W: 31.593

Shapefile
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Featured Humidity Observation Method: MLS

The Microwave Limb Sounder (MLS) instrument is carried aboard the Aqua satellite and acquires measurements globally day and night. The MLS makes measurements of atmospheric composition, temperature, humidity and cloud ice that are needed to learn more about weather, climate, and air quality.

Learn More About MLS
image collage of satellite data images of Earth

MLS Near Real-Time Data

Near real-time atmosphere, temperature, humidity, and cloud ice data from the Microwave Limb Sounder (MLS) are available through NASA's Land, Atmosphere Near real-time Capability for Earth observation (LANCE).
image of MLS SIPS data over Antarctica

MLS Products Available in GIBS

In coordination with the Microwave Limb Sounder (MLS) team, we now have several MLS products available through the GIBS image access APIs.

Humidity Data Tools

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