LiveFreeWeb appCities & Mobility

OpenAQ Exposure Explorer

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.

air qualityhealthrouting

Primary decision

Which route keeps exposure lower, and how meaningful is the difference?

Built for

  • health-aware commuters
  • city analysts
  • mobility designers

Outputs

  • route exposure comparison
  • sample-point evidence
  • air-quality-aware routing view

Data footprint

  • OpenAQ measurements
  • OSRM routing
  • Nominatim geocoding

OpenAQ Exposure Explorer

Estimate personal exposure along candidate routes, choose cleaner paths, manage daily exposure budget.

liveuser-facing

Understanding Air Quality Exposure

🌬️ Pollutant Types

  • PM2.5: Fine particulate matter, penetrates deep into lungs
  • PM10: Coarse particulate matter, causes respiratory irritation
  • NO2: Nitrogen dioxide from vehicle emissions
  • O3: Ground-level ozone, worse on hot sunny days

🗺️ Route Planning

  • Exposure Comparison: Compare air quality along different routes
  • Time Weighting: Longer exposure = higher total dose
  • Daily Budget: Track cumulative exposure throughout the day
  • Cleaner Paths: Find routes through parks and away from traffic

Currently showing data for lat: 37.7749, lon: -122.4194. Use URL params lat,lon to set a custom point.

Live Air Quality Data

Data from OpenAQ, AirNow, and WAQI • Updated in near real-time

OpenAQ (PM2.5)

  • No recent measurements.
OpenAQ works without keys

AirNow (US)

  • No nearby public AQI observations right now.

WAQI

No secondary AQI source available for this location right now.

Daily Exposure Budget

Daily Exposure Budget

No recent readings
Based on OpenAQ samples near your map area.

Route Comparison & Map

Route Comparison (walking)

Routes unavailable.

Use URL params lat,lon to change origin. This demo computes quick OSRM walking alternatives and estimates exposure from nearby PM2.5.

Current: 37.7749,-122.4194
Tip: type to see suggestions, use ↑/↓ and Enter to pick.
Mode:

Understanding Your Exposure

Health Impact Factors

  • Duration: Longer exposure increases total dose
  • Activity Level: Exercise increases breathing rate and uptake
  • Individual Sensitivity: Children, elderly, and those with respiratory conditions more susceptible
  • Cumulative Effects: Daily exposure adds up over time

Route Optimization Tips

  • Avoid Rush Hours: Peak traffic = peak pollution
  • Choose Parks & Greenways: Trees filter air naturally
  • Side Streets vs Highways: Less traffic often means cleaner air
  • Time of Day: Early morning often has cleaner air

Live Data Sources

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

Use this like a real decision surface, not a static demo

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.

  • Design healthier route guidance around exposure tradeoffs
  • Support public-health and mobility storytelling with interpretable evidence
  • Compare route choices when travel time is not the only objective

Outputs

  • route exposure comparison
  • sample-point evidence
  • air-quality-aware routing view

Source inputs

  • OpenAQ measurements
  • OSRM routing
  • Nominatim geocoding
  • WAQI fallback context

Interactive tools designed and built by Terry Chen

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.

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  • Extreme Events Dashboard, Atmosphere to Magnetosphere: Unify severe weather alerts, earthquakes, wildfires, and space weather with a coordinated map and timeline. This tool demonstrates multi-source event monitoring, real-time coordination, and resilience analytics and reinforces Terry Chen's position as a cross-domain builder working across environmental intelligence, market analytics, civic systems, cybersecurity, and research discovery.
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  • OpenAQ Exposure Explorer: Estimate personal exposure along candidate routes, choose cleaner paths, and manage daily exposure budget. This tool demonstrates air-quality analytics, route optimization, and health-oriented decision support and reinforces Terry Chen's position as a cross-domain builder working across environmental intelligence, market analytics, civic systems, cybersecurity, and research discovery.
  • Air Quality Watchlist: Compare live AQI baselines across major cities using a consistent forecast source and PM2.5 context. This tool demonstrates air-quality monitoring, comparative city intelligence, and health-oriented dashboard design and reinforces Terry Chen's position as a cross-domain builder working across environmental intelligence, market analytics, civic systems, cybersecurity, and research discovery.
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