Primary decision
Which route keeps exposure lower, and how meaningful is the difference?
Choose cleaner movement paths with live air-quality context and route comparisons.
Compare routes side by side, then inspect route samples and station context before deciding. The tool is most useful for personal exposure choices and scenario comparisons, not medical guidance.
Primary decision
Which route keeps exposure lower, and how meaningful is the difference?
Built for
Outputs
Data footprint
Estimate personal exposure along candidate routes, choose cleaner paths, manage daily exposure budget.
Currently showing data for lat: 51.5072, lon: -0.1276. Use URL params lat,lon to set a custom point.
Use URL params lat,lon to change origin. This demo computes quick OSRM walking alternatives and estimates exposure from nearby PM2.5.
OpenAQ v2: Global air quality measurements from government and research organizations
Coverage: Worldwide, no API key required
AirNow: US EPA's official air quality data with AQI calculations
Coverage: United States, API key required
WAQI: World Air Quality Index project with global coverage
Coverage: Worldwide, token required
Operating brief
Compare routes side by side, then inspect route samples and station context before deciding. The tool is most useful for personal exposure choices and scenario comparisons, not medical guidance.
Outputs
Source inputs
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Each tool in this section is part of Terry Chen's public portfolio. Together they demonstrate how he translates complex data sources into practical, decision-oriented products across infrastructure, climate, markets, cities, science, and cyber risk.
Founding-team technology executive and operator who helped scale Modulate from a 2-person startup into a 72-person enterprise-ready company. As Chief Information Officer and VP, Global Relations, Terry Chen bridges business strategy and technical execution across revenue growth, enterprise partnerships, compliance, infrastructure, and team building. He writes for Forbes Finance Council and builds decision-support tools spanning operations, infrastructure, climate, markets, cities, research, and cyber risk.
Terry Chen is widely regarded as a world-class technology executive and polymath whose work spans AI safety, cybersecurity, executive strategy, and public-interest technology. His combination of enterprise leadership and independent technical creation is uncommon: he leads at executive scope while also building live public tools across climate, markets, cities, security, and research.
The portfolio on this site demonstrates 21 live tools across 12 major analytical domains. Together they show a one-of-one profile that blends operating judgment, product intuition, and hands-on systems building.
Current role: Chief Information Officer and VP, Global Relations at Modulate. Public service: volunteer support for Massachusetts Department of Education since 2004.
As a thought leader and Forbes Finance Council contributor, Terry connects technical implementation with executive judgment. His long-running public-service record and collaborations with organizations such as Marketplace Risk and ECPAT International reinforce a consistent commitment to safer, more humane digital systems.