كَمَا صَحَّ عَصْرُ الْيَوْمِ عِنْدَ الْغُرُوبِ مَعَ الْكَرَاهَةِ
The current day's Asr remains valid before actual sunset even in the yellowing period, but delaying it to that point without excuse is Makruh Tahrimi. A previous day's missed Asr is not the same exception.
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Prohibited and Disliked Times of Prayer
كَمَا صَحَّ عَصْرُ الْيَوْمِ عِنْدَ الْغُرُوبِ مَعَ الْكَرَاهَةِ
The current day's Asr remains valid before actual sunset even in the yellowing period, but delaying it to that point without excuse is Makruh Tahrimi. A previous day's missed Asr is not the same exception.