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

    CalHeatScore Feature Layer

    Metadata Updated: January 23, 2026

    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

    ·       PO_NAME = Post office name

    ·       STATE = State of zip code

    ·       DAY_STRING = Day of forecast, including abbreviated day of week name, month, and day of month (e.g., “Mon Dec 08”)

    ·       Category = CalHeatScore ranking (ranges from 0 to 4)

    ·       DAY_ORDER = Order of forecast days (ranges from 0 to 6, with 0 indicating the current day), display values mirror DAY_STRING

    ·       DAY_TEMP = National Weather Service (NWS) daily maximum heat index calculated from forecast pulled at 5am and 8am Pacific time of current day, rounded to the nearest integer

    ·       TEMP_MAX = Record daily maximum air temperature from 1979-previous year for current calendar day (e.g., all previous December 8ths) from gridMET historical climate data

    ·       TEMP_AVG = Average daily maximum air temperature from 1979-previous year for current calendar day (e.g., all previous December 8ths) from gridMET

    ·       DAY_TEMP_AIR = NWS daily maximum air temperature for forecast pulled from current day

    ·       Shape_Area = Area of zip code shape

    ·       Shape_Length = Length of zip code shape

    For more information, see the CalHeatScore mapping tool or contact CalHeatScore@oehha.ca.gov.

    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: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date December 23, 2025
    Metadata Updated Date January 23, 2026

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 23, 2025
    Metadata Updated Date January 23, 2026
    Publisher California Office of Environmental Health Hazard Assessment
    Maintainer
    Identifier 69e9d439-cab0-41cf-ae17-b6b38bb4abee
    Data First Published 2024-12-18T19:21:55.000Z
    Data Last Modified 2024-12-20T01:05:52.000Z
    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 80742113-885d-4250-8921-ededf3d2205f
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    Source Datajson Identifier True
    Source Hash 7a8194aad23ffdcf3390f89b48254bf4e643cb404e3d59f6a0ac0aab9e3fb597
    Source Schema Version 1.1

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