The mission of the Office of Environmental Health Hazard Assessment (OEHHA) is to protect and enhance public health and the environment by scientific evaluation of risks posed by hazardous substances.
Toxicity data for Air (Acute and Chronic Reference Exposure Levels (RELs)), Water (Public Health Goals (PHGs)), Soils (California Human Health Screening Levels (CHHSLs)) and Proposition 65 No Significant Risk Levels (NSRLs) and Maximum Allowable...
The Office of Environmental Health Hazard Assessment (OEHHA), on behalf of the California Environmental Protection Agency (CalEPA), developed California Communities Environmental Health Screening Tool: CalEnviroScreen Version 2.0 (CalEnviroScreen...
CalEnviroScreen is a mapping tool that helps identify California communities that are most affected by many sources of pollution, and where people are often especially vulnerable to pollution’s effects. CalEnviroScreen uses environmental, health,...
Each daily summary file contains data for every monitor (sampled parameter) in our database for each day. This dataset shows Ozone at all monitoring locations throughout the year 2017.
Holds hourly surface temperature data from weather stations across the globe, and an important source of temperature data for temperature-health studies.