Visualize Phenology Data

Explore Phenology Models & Maps

Download Observed Data

Access API Code & Tools

Data Metrics

Up-to-the-minute summary metrics of the data found in our National Phenology Database for the current year.

 

51,826

Registered Observers

35+ Million

Observations

39,250

Registered Sites

More Data Resources

 
Data Quality

Explore how we implement measures to ensure plausibility, validity, and reliability of our data.

 
 
External Datasets

Search an existing dataset or share an external dataset.

 
 
Data Attribution Policy

Read our Data Use and Data Attribution Policies.

 
 
Data Products

Learn about our process for data product development as well as the data sources, models and software we use.

 

Publications Using USA-NPN Data

The USA-NPN has contributed to the development of over 100 peer-reviewed publications. Collectively the models, observational data, and gridded data have served to advance the science of phenology by increasing understanding of phenological patterns and climatic drivers of plants and animals at local to continental scales.

 SEE PUBLICATIONS