青空

1. Origins, structure, and basic meaning

• Structure: 青空, read あおぞら, means a clear blue sky.
• Basic usage: A sky after rain is 雨上がりの青空, while one seen after a long interval is 久しぶりの青空; the preceding phrase supplies the situation.

2. Common pitfalls and similar expressions

• Blue sky and time information supplied by modifiers
  • 青空 itself does not mean “after rain” or “for the first time in a while.” Those meanings come from 雨上がりの and 久しぶりの.