A score for how heat may affect health in each ZIP code today, from 0 (low) to 4 (severe). It also shows a seven-day outlook.
Published by CalEPA CalHeatScore
Updates Every morning. The site checks for new data every 30 minutes while the page is open.
Keep in mind A score for a whole ZIP code does not tell you your personal risk or the temperature on your street. The expected highest air temperature near the place you select. In the evening, it shows tomorrow’s high.
Published by National Weather Service
Updates Forecasts change as the National Weather Service issues them. The site updates its saved forecast about once an hour.
Keep in mind This is a forecast, not a thermometer reading at your exact location. ZIP areas where heat may pose greater health risks. The scores use past illness, health, and local living conditions.
Published by CDC Heat & Health Index (2024)
Updates A saved copy of the published 2024 CDC index, a set of heat-risk scores. It is not live weather data.
Keep in mind Low, Moderate, and High are this site’s groups of CDC scores, not official CDC risk levels. ZIPs without data get no rating. How hot roofs, roads, and ground were on clear summer days. Satellites measured this in late morning.
Published by USGS Landsat 8 & 9, summer 2025 (late-morning passes)
Updates The map uses a saved set of summer 2025 readings. These are not today’s readings and do not update each year on their own.
Keep in mind Surface temperature is not the same as air temperature. Areas where brush, hills, and usual weather create Moderate, High, or Very High fire danger over the long term.
Published by CAL FIRE (state areas 2024, local areas 2025)
Updates Official maps change every few years. This site uses state-area maps from 2024 and local-area maps from 2025. It updates its saved map daily.
Keep in mind Fire zones do not show active fires, evacuation orders, or today’s fire danger. Public places where you can cool off. These include regular centers and extra sites opened during heat events.
Published by LA County OEM · City of LA Recreation and Parks
Updates Regular sites come from a saved list. Extra centers are checked when the page opens and about every ten minutes while it stays open. Officials update openings as needed.
Keep in mind Hours and openings can change; call the center or 211 before you go. Shelters listed by local officials during an emergency.
Published by LA County and City of LA emergency maps
Updates Officials update sites during emergencies. The site checks the lists when the page opens and about every ten minutes while it stays open.
Keep in mind A missing marker does not prove that no shelter is open; check official emergency alerts. Public drinking-water stations, including stations inside buildings.
Published by City of LA (2022 list)
Updates A saved City of LA list from 2022. It does not check whether water is available now.
Keep in mind A station may be closed or not working. Indoor stations depend on building hours. Outlines of the featured neighborhoods. These let you select an area on the map.
Published by LA Times Mapping L.A.
Updates Saved neighborhood outlines, not a live list.
Keep in mind These outlines are not legal property boundaries or emergency evacuation zones.