ExperimentalWe used data and feedback to make a user-friendly site. We’d love your feedback.
Back to data.ca.gov.

CalHeatScore ByDay WideFormat

CalHeatScore is a public health tool to help Californians stay informed, ready, and safe when temperatures rise. The purpose of CalHeatScore is to reduce heat-related illness and save lives by translating meteorological, weather and health data into easy-to-understand heat risk alerts. Click on this link to go directly to the CalHeatScore mapping tool. Update frequency: daily.Data Definitions:·       ZIP_CODE = Zip code identifier·       Date = Date associated with CHS Day 0·       CHS Day 0 =  The CalHeatScore on the day associated with the Date field·       CHS Day 1 =  The CalHeatScore one day after the day associated with the Date field·       CHS Day 2 =  The CalHeatScore two days after the day associated with the Date field·       CHS Day 3 =  The CalHeatScore three days after the day associated with the Date field·       CHS Day 4 =  The CalHeatScore four days after the day associated with the Date field·       CHS Day 5 =  The CalHeatScore five days after the day associated with the Date field·       CHS Day 6 =  The CalHeatScore six days after the day associated with the Date field·       Shape_Area = Area of zip code shape·       Shape_Length = Length of zip code shapeFor more information, see the CalHeatScore mapping tool or contact CalHeatScore@oehha.ca.gov.

Data files

Data title and descriptionAccess dataFile detailsLast updated

CSV

Download
CSV
01/21/26

Shapefile

DownloadZIP
01/21/26

GeoJSON

DownloadGEOJSON
01/21/26

KML

DownloadKML
01/21/26

Supporting files

Data title and descriptionAccess dataFile detailsLast updated

ArcGIS Hub Dataset

HTML
01/21/26

ArcGIS GeoService

ARCGIS GEOSERVICES REST API
01/21/26

API endpoint

Dataset Name

Use the query web API to retrieve data with a set of basic parameters. Copy the API endpoint you need to start.

Usage documentation