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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    CDPH-CalCAT Modeling Nowcasts and Forecasts for COVID-19 and Influenza

    Metadata Updated: December 23, 2025

    This dataset includes three tables with the model-based projections and estimates as shown on CalCAT in 2025 (http://calcat.cdph.ca.gov) for California state, regions, and counties.

    (1) COVID-19 Nowcasts includes the R-effective estimates for COVID-19 from the different models available for the past 80 days from the archive date and the median ensemble thereof.

    (2) CalCAT Forecasts includes hospital census and admissions forecasts for COVID-19 and Influenza, and the corresponding ensemble metrics for a 4 week horizon from the archive date.

    (3) Variant Proportion Nowcasts contains the Integrated Genomic Epidemiology Dataset (IGED)-based and Terra-based estimates of COVID-19 variants circulating over the past 3 months as well as model-based predictions for the proportions of the variants of concern for dates leading up to the archive date. Prediction intervals are included when available.

    This dataset provides CalCAT users with programmatic access to the downloadable datasets on CalCAT.

    This dataset also includes a zipped file with the historical archives of the COVID-19 Nowcasts, CalCAT Forecasts and Variant Proportion Nowcasts through 2023.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date March 30, 2024
    Metadata Updated Date December 23, 2025

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 30, 2024
    Metadata Updated Date December 23, 2025
    Publisher California Department of Public Health
    Maintainer
    Identifier 87411b1f-75a6-4a15-9783-96b4b5ac819a
    Data First Published 2023-09-25T18:42:52.756760
    Data Last Modified 2025-12-19T16:40:23.434056
    Category COVID-19, Health and Human Services
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 3d351386-19f6-4837-8a58-e037ddb145b1
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    License http://www.opendefinition.org/licenses/cc-by
    Source Datajson Identifier True
    Source Hash 5b87c3ce5a8ced5bf5b33197ced45d130e784935df6b3dd649e0ae571a08db48
    Source Schema Version 1.1

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