I used the ClimaCell api about a year ago as part of a POC and it was pretty nice. The biggest feature for my use case was their granularity. The ability to query the service using a point (lat/long) and have returned the specific weather for that location was nice. All other services required two requests, one to find the nearest weather station, another to query said station for data. ClimaCells model predicts weather for locations where no forecast data exists. I would recommend ground-truthing the forecasted vs actuals for the modeled areas. Beyond their api, they have a pretty killer dashboard where you can plot your assets and set geofences for weather alerts.