# AQIWatcher

AQIWatcher is a free real-time air quality monitoring platform providing AQI scores, health guidance, and 7-day forecasts for any city worldwide.

## Key Features
- Real-time AQI (Air Quality Index) data updated hourly
- PM2.5, PM10, ozone (O3), NO2, CO, SO2 pollutant tracking
- 7-day air quality forecast
- Health recommendations for sensitive groups (elderly, children, pregnant, athletes)
- City comparison and global rankings
- Trip planner with air quality forecasts
- Pollen forecast
- Email and push notification alerts
- Embeddable widget

## Data Source
Data sourced from Open-Meteo Air Quality API (open-meteo.com). Free and open-source.

## API
Public REST API available at /api/ — no authentication required.
Rate limited to 120 requests per minute.
Endpoints: /api/search, /api/city, /api/coords, /api/compare, /api/nearby, /api/popular, /api/rankings, /api/historical, /api/aqi-grade, /api/health

## Pages
- / — Home / city search
- /city/{slug} — City dashboard with full AQI breakdown
- /compare — Side-by-side city comparison
- /rankings — Global city AQI rankings
- /map — Air quality map
- /travel — Trip air quality planner
- /briefing — Daily air quality briefing
- /pollen — Pollen report
- /converter — AQI unit converter
- /widget — Embeddable widget generator
- /api-explorer — Interactive API documentation