Cooling that improves at night but fails during the day may point to undersizing, airflow limits
https://winterhavenhvacrepair975.lumenforgex.com/posts/what-to-do-after-the-third-ac-breakdown-this-summer
Cooling that improves at night but fails during the day may point to undersizing, airflow limits, or heat gain in the home. Review shading and schedule a system check.