Synoptic Data provides real-time and historical weather observation data by aggregating and processing data from over 100,000 stations across the United States and abroad. And now, this real-time data is available as a Feature Layer within ArcGIS specifically for the central United States. Learn more about Synoptic Data and our process of aggregating, processing, and disseminating weather observations in our ArcGIS StoryMap. Start a free trial above and incorporate the latest weather observations into your existing and new workflows.
Some use cases where this product can help improve workflows include:
- Improving situational awareness - Better understanding of current and approaching weather conditions.
- Better risk management - Make better informed decisions to hedge your risk due to weather disruptions.
- More efficient and more resilient operations - Prepare and respond to changing weather conditions.
Synoptic Data is the industry leader in aggregating, processing, and disseminating real-time weather and other geophysical observational data. Synoptic Data currently aggregates data from more than 100,000 active stations, collecting more than 96 million weather and geophysical observations daily.
Weather variables and units
STID - Station Identifier
Name - Station name
MNET ID - Network Identifier code
MNET Shortname - Network short name
Date Time - Time of latest weather station recorded observation
Air Temperature [℉]
Air Temperature Max [℉] - Maximum observed air temperature since local midnight
Air Temperature Min [℉]] - Minimum observed air temperature since local midnight
Road Temperature [℉] - Road surface temperature
Road Temperature Max [℉] - Maximum observed road surface temperature since local midnight
Road Temperature Min[℉] - Minimum observed road surface temperature since local midnight
Relative Humidity [%]
Dew Point Temperature [℉]
Wind Speed [mph]
Wind Direction [degrees]
Wind Gust [mph]
Wind Speed Max [mph] - Maximum observed wind speed since local midnight
Wind Speed Min [mph] - Minimum observed wind speed since local midnight
Wind Gust Max [mph] - Maximum observed wind gust since local midnight
Wind Gust Min [mph] - Minimum observed wind gust since local midnight
Solar Radiation [W/m**2]
Altimeter [inHg] - Equivalent station pressure adjusted to mean sea level
Visibility [statute miles]
Weather Summary - A summary of cloud conditions and any sensible weather conditions (more info here)
All times are originally in UTC, but show as local time relative to user location.
All units are english, except for solar radiation.
Not all stations contain all variables listed above.
Quality control is applied to all observations to help ensure values are within reasonable limits, but note that some observations containing errors may still exist in certain cases.
- Situational Awareness
- Operational Efficiency
- Risk Management
- Facility Management
- Field Service Management
- State and Local Government
- National Government
- Public Safety
- Electric and Gas Utilities
Jun 16, 2022