## Traffic information

* `GOOGLE_API_KEY` - API key with access to Distance API. Note: Distance Matrix API sounds useful, 
but does *not* allow intermediate waypoints, which is essential to provide info on alternate routes.

* `TRAFFIC_FROM`

* `TRAFFIC_1_THROUGH` - single intermediary point, route option 2 

* `TRAFFIC_2_THROUGH` - single intermediary point, route option 2

* `TRAFFIC_TO`

## Air information

* `AIRLY_API_KEY`

* `LATITUDE`

* `LONGITUDE`

## Weather information

* `OPENWEATHERMAP_API_KEY` - OWM API key

* `LATITUDE`

* `LONGITUDE`