All data comes from public sources. Government agencies do not endorse this site.
| Source | What we use it for |
|---|---|
| NOAA National Data Buoy Center (NDBC) | Buoy and coastal station water temperature, waves and wind |
| NOAA Tides & Currents (CO-OPS) | Water temperature at tide stations |
| U.S. Geological Survey (USGS) Water Data | Water temperature in lakes, reservoirs and estuaries |
| NASA JPL MUR sea surface temperature | Daily satellite water temperature for coasts and large lakes. These data were provided by JPL under support by NASA MEaSUREs program. |
| EPA UV Index forecast (NOAA Climate Prediction Center) | Hourly and daily UV index by ZIP code |
| National Weather Service API | Forecasts and active alerts (frost, freeze, rip currents, beach hazards) |
| NOAA NCEI U.S. Climate Normals 1991–2020 | Frost and freeze probabilities, growing season, monthly temperature normals |
| 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM) | Hardiness zone by ZIP code |
| U.S. Census Bureau | 2025 Gazetteer place and ZIP code locations; 2025 population estimates |
| EPA BEACH Act beach locations | Beach locations used to place beach pages |
Notes on specific datasets
- Daily MUR readings use the original NASA grid republished by the Australian Antarctic Division on Source Cooperative. Historical monthly MUR averages were obtained through NOAA CoastWatch ERDDAP.
- Hardiness zones are shown as text from the ZIP code table published with the 2023 USDA map. This site does not reproduce or alter the official map; see the USDA Plant Hardiness Zone Map.
- Real-time readings are provisional and may be revised by the agencies that publish them.