CalEPA Urban Heat Island Index
Urban–rural heat differential (degree-hour index).
Curated datasets and tools for urban heat, air & dust, health, water (green stormwater infrastructure), biodiversity, infrastructure, equity/mobility, and integrated resilience. Presented at the California Active Transportation Program Symposium .
Remote sensing, canopy, and comfort modeling resources for heat exposure, shade planning, and surface/air temperature analysis.
Urban–rural heat differential (degree-hour index).
Remote-sensed land surface temperature from USGS/NASA.
Statewide canopy and land cover datasets for planning and analysis.
Tree structure, health, and species composition monitoring in urban areas.
User sampling and valuation of tree canopy for local projects.
High-resolution 2022 canopy data across urbanized California.
Human-perceived temperature and outdoor comfort simulations.
Shade modeling and mean radiant temperature analysis inputs.
Near-real-time sensors, emissions inventories, and land-cover proxies for particulate/dust exposure and mitigation planning.
Crowdsourced and official monitoring for PM and AQI.
Pollution burden and population vulnerability composites.
GHG and criteria pollutants by sector.
Vegetation cover and exposed-soil proxies for dust.
Public health indicators, heat-illness metrics, and EJ screening to connect environmental exposure to outcomes.
Chronic disease, obesity, and physical-activity indicators.
ER visits and hospitalizations linked to extreme heat.
Environmental justice screening and mapping tool combining demographic and environmental burden indicators.
State health and social vulnerability metrics.
Green stormwater infrastructure (GSI), hydrology, and flood risk for street retrofits and compliance.
Planning and design tools for GSI performance.
Bay Area GSI and MRP 3.0 compliance toolkit.
National Flood Hazard Layer for risk screening.
Soil hydrology and infiltration suitability.
Sea-level rise exposure and floodplain projections.
Native species data and wildfire context for habitat-forward street design and buffers.
Native species and vegetation occurrences in California.
Citizen-science biodiversity observations.
Vegetation-based wildfire hazard zones.
Assets and right-of-way datasets for materials, curb/ROW constraints, and existing BMP inventories.
Pavement materials and distress indicators for state highways.
ROW dimensions and curb data (availability varies by jurisdiction).
Existing bioretention, swales, and infiltration BMPs (Bay Area).
Access, vulnerability, and trip data to align investments with user needs and mobility gaps.
Social determinants of health and environmental vulnerability.
Tree canopy vs. need and equity scoring for urban areas.
Composite socioeconomic and demographic vulnerability index.
Transportation-disadvantaged areas by mode and access.
Mode share, commute time, and vehicle access indicators.
Active transportation and origin-destination mobility analytics.
Multi-variable indices and flexible OSM extracts to combine exposure, vulnerability, and assets.
Combines temperature, demographics, and health data.
Resilience capacity relative to environmental stressors.
Extract features (trees, sidewalks, bike lanes) for usability mapping.
High-frequency reflectance and vegetation indices.