MyEnvironment (EPA): Look up information on air quality, water conditions for local water bodies, watershed information, and EPA cancer risk for your community.
Healthy Communities Data and Indicators Project: Data and tools that a broad array of sectors can use for planning healthy communities and evaluating the impact of plans, projects, policy, and environmental changes on community health. Data are down to county level.
Drought Information: National Oceanic and Atmospheric Administration (NOAA) information on drought.
CalEnviroScreen 3.0, Office of Environmental Health Hazard Assessment (OEHHA), California Environmental Protection Agency (CalEPA): CalEnviroScreen is a screening methodology that can be used to help identify California communities that are disproportionately burdened by multiple sources of pollution. Maps and raw data are available at the census tract level.