Description
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.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Data Dictionary - Variant Proportion Nowcasts for COVID-19 | CSV | Data Dictionary for https://data.chhs.ca.gov/dataset/edf83d56-9562-4813-b668-ea4c1d3dcde4/resource/7a2aed45-2f48-46a6-bb0b-75bab0d74ab7/download/outputfile.csv | Open resource |
| CalCAT Forecast | CSV | outputfile.csv | Open resource |
| Data Dictionary - Variant Nowcasts | CSV | Data Dictionary - Variant Nowcasts | Open resource |
| [ARCHIVE 2020-2023] CalCAT Forecasts and Nowcasts Historical Archive | Unknown | Zipped file containing one file each for COVID-19 Nowcasts, COVID-19 and Influenza Forecasts and Variant Proportion Nowcasts as shown on CalCAT from 2020 through 2023. The data dictionaries for the files are available at https://data.chhs.ca.gov/dataset/calcat. | Open resource |
| Variant Proportion Nowcasts for COVID-19 | CSV | outputfile.csv | Open resource |
| All resource data | ZIP | calcat-pw9qwx.zip | Open resource |
| Data Dictionary - Nowcasts | CSV | Data Dictionary - Nowcasts | Open resource |
| COVID-19 Nowcasts | CSV | outputfile.csv | Open resource |
| Data Dictionary - Forecasts | CSV | Data Dictionary - Modeling Forecasts for COVID-19 and Influenza | Open resource |
| [ARCHIVE 2024] CalCAT Forecasts and Nowcasts Historical Archive | ZIP | Zipped file containing one file each for COVID-19 Nowcasts, COVID-19 and Influenza Forecasts and Variant Proportion Nowcasts as shown on CalCAT throughout 2024. The data dictionaries for the files are available at https://data.chhs.ca.gov/dataset/calcat. | Open resource |