Visualize Phenology Data

Explore Phenology Models & Maps

Download Observed Data

Access API Code & Tools

Data Metrics

Contributions to the National Phenology Database

Total Metrics

32,547

All-time

Active Observers

44,442,981

All-time

Observation Records

22,531

All-time

Active Sites

Current Year Metrics

145

Current Year

Active Observers

32,825

Current Year

Observation Records

190

Current Year

Active 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 nearly 200 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