# CA Heat Score — California Heat Score Tracker > California heat risk tracker with scores, forecasts, and safety information. (iPhone/iPad app by Michael Germino.) - Source: https://appshunter.io/ios/app/ca-heat-score/id6760856821 (this page in markdown: same URL + `.md`) - Developer: [Michael Germino](https://appshunter.io/developer/1886547523) - Category: Weather - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 15.1 · 73 MB - Languages: English - Released: 2026-03-27 - Data updated: 2026-06-05 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ca-heat-score/id6760856821/reviews.md ## What is CA Heat Score? CA Heat Score makes it easy to understand your daily heat risk anywhere in California. Built on publicly available data from the California Office of Environmental Health Hazard Assessment (OEHHA), this app delivers heat scores, forecasts, and safety guidance in a clean, intuitive interface. DAILY HEAT SCORES Check the current heat score for any California ZIP code on a scale of 0 to 4. Each score comes with a clear risk label — from Low to Severe — so you know exactly what to expect before heading outside. INTERACTIVE HEATMAP Explore an interactive map of California with color-coded heat scores for every ZIP code. Tap any area to see its heat score, current temperature, and demographics. Use the built-in date picker to view forecasted heat scores up to 7 days. 7-DAY HEAT FORECAST Plan your week with daily heat score forecasts. See how heat risk is expected to change over the next 7 days, along with forecasted high and low temperatures for each day. LOCATION-AWARE The app detects your location and shows the heat score for your current ZIP code. Change locations at any time by searching for any California ZIP code. HEAT SAFETY GUIDANCE Learn what each heat score level means for your health and safety. Get actionable tips for staying safe during high heat events, including advice for vulnerable populations, outdoor workers, and caregivers. ZIP CODE DETAILS View detailed information for any ZIP code including population, age distribution, and race/ethnicity demographics — helping you understand the communities most impacted by extreme heat. SCORE HISTORY Track heat score trends over the past week to understand how conditions have been changing in your area. KEY FEATURES -Heat scores for every California ZIP code (0-4 scale) -Interactive heatmap with color-coded risk levels -7-day heat score and temperature forecasts -Forecast date picker on the map -Current temperature and conditions -Location detection with ZIP code search -Heat safety guidance and tips -ZIP code demographics and population data -Score history tracking -Dynamic themed backgrounds -User location shown on map ABOUT THE DATA All heat score data comes from publicly available sources provided by the California Office of Environmental Health Hazard Assessment (OEHHA). CA Heat Score is an independent app and is not affiliated with or endorsed by OEHHA or the official CalHeatScore program or the state of California. Weather data is provided by Open-Meteo. Stay informed. Stay safe. Know your heat risk. ## Key features - Daily heat scores (0-4 scale) - Interactive heatmap - 7-day heat score forecasts - Location detection - Heat safety guidance - ZIP code demographics ## Frequently asked questions about CA Heat Score ### What is the CA Heat Score app? CA Heat Score provides daily heat risk scores, forecasts, and safety guidance for any California ZIP code. It uses publicly available data to help users understand and prepare for extreme heat. ### How accurate is the CA Heat Score data? The app's heat score data is sourced from the California Office of Environmental Health Hazard Assessment (OEHHA), a publicly available and official source for heat risk information. ### Does CA Heat Score have ads? No, CA Heat Score is ad-free, allowing for an uninterrupted user experience while tracking heat risks. ### What devices support CA Heat Score? CA Heat Score is available for iPhone and iPod devices. It is designed to be accessible on these Apple mobile platforms. ### How often is CA Heat Score updated? The app was last updated on April 16, 2026, indicating ongoing development and maintenance to ensure data accuracy and functionality. ### Can I see heat forecasts for more than one day? Yes, CA Heat Score offers a 7-day heat score and temperature forecast. You can use the built-in date picker on the interactive map to view future heat conditions. ### What does the 0-4 scale mean in CA Heat Score? The 0-4 scale represents the daily heat risk level, with each score corresponding to a clear risk label ranging from Low to Severe. This helps users quickly understand the potential danger. ### Is CA Heat Score free to use? Yes, CA Heat Score is completely free to download and use. There are no in-app purchases or subscription fees required to access its features. ## Version history (last 4 releases) ### 1.1.2 — 2026-04-16 Minor bug fixes ### 1.1.1 — 2026-03-28 heatscore card UI bug fixes ### 1.1.0 — 2026-03-27 Now mapping cooling centers. Includes bug fixes and UI enhancements. ### 1.0 — 2026-03-27 No release notes. ## Related topics [heatopia](https://appshunter.io/ios/topics/heatopia) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*