## Key features
- **Particulate Matter(PM) Quantity**: See how many particles are in the air.
- **Particulate Matter(PM) Weight**: See how heavy the particles are in the air.
- **Air Pollution Alert**: push notification to you when the air quality worsens.
- **Pollution Map**: show the AQI of nearby stations on the map.
- **Air Quality forecast**: provide Air Quality forecast up to 8 days.