OpenWeatherMap
5-day forecast with mixed resolution (hourly + 3h intervals)
- ✓120 hours coverage
- ✓Hourly data (first 48h)
- ✓High accuracy
- ✓Requires API key
7Timer ASTRO
72-hour astronomy-focused forecast with specialized metrics
- ✓72 hours coverage
- ✓Seeing quality
- ✓Transparency data
- ✓No API key needed
- ✓Free forever
Combined (Best of Both)
7Timer for first 48h (astronomy details) + OpenWeather for days 3-5
- ✓120 hours coverage
- ✓Astronomy metrics
- ✓Extended forecast
- ✓Best accuracy