Overlays work on any map layer and provide a wealth of additional information to help you plan your next adventure. To help you understand what the various colors represent, here is a handy key:
US Contours
We use a smooth gradient slope shading color scheme to visually represent slope angles.
- Up to 20 degrees is Green
- 21-28 degrees is Yellow
- 29-40 degrees is Red
- 41-55 degrees is Blue
- 56-60 degrees is Black
Fire History (Pro overlay)
- Older fire areas are Yellow
- Recent fire areas are Orange to Red
- Active fires are Fire icon or an 'X'
Weather (Pro overlay)
This overlay is a combination of satellite and radar. To help differentiate the intensity of falling rain or snow, different colors are used for radar.
- Light green is light rain
- Dark green is light to moderate rain
- Yellow is moderate rain
- Orange is heavy rain
- Red is very heavy rain or rain and hail
- Blue is snow
- Purple is freezing rain or sleet
Air Quality (Pro overlay)
Our real-time air quality index is represented via a color-coded heatmap, where green indicates the cleanest air and red indicates the most polluted.