What is LCP by hour of the day
LCP by hour of the day shows how the Largest Contentful Paint (LCP) fluctuates throughout different times of the day.
This breakdown helps you identify performance patterns that might be tied to peak traffic periods, server load, CDN caching behavior, or user behavior. Since LCP represents the loading time of the largest element on the page, monitoring it across the day highlights whether your site can stay fast and reliable during both low and high-demand hours.
LCP by hour of the day sample
Should you worry
In a healthy view, LCP remains stable and green across all hours of the day. Small natural variations are expected (for example, slightly higher LCP during peak browsing hours), but nothing that pushes values into the yellow or red zone.
A healthy setup typically shows:
Consistent LCP values in the green range (under 2.5s).
Minimal spikes during traffic peaks.
Balanced infrastructure with CDN edge caching or autoscaling servers.
If your LCP is steady across all hours, your site is handling traffic efficiently.
Unhealthy LCP by hour of the day
If you see LCP degrading at specific times of the day, it usually indicates strain on your infrastructure or resource delivery.
Common reasons include:
Traffic surges overwhelming your servers during peak hours.
Cache misses when fresh content invalidates CDN caches.
Background jobs or cron tasks slowing down responses (e.g., during nightly processing).
Third-party bottlenecks (ads, analytics, or personalization tools) that spike in latency during business hours.
These time-based slowdowns can turn into noticeable performance issues, frustrating users depending on when they visit.
Resolving unhealthy LCP by hour of the day
Go-to action plan to resolve an unhealthy LCP by hour of the day:
Ask Uxi to analyze your LCP by hour of the day values and suggest improvements.
Use Filters to see if slowdowns align with specific geographies, devices, or traffic types.
Simulate LCP of the suspected breakdown to see if fixing it will resolve the slow LCP by hour of the day. If yes, this is where the resolution focus should be.
Use an automated LCP optimization tool like Navigation AI to improve your LCP by hour of the day values.
Once you’ve improved LCP, set an alert to be the first to know if it starts worsening again.
Try it yourself
Discover how your website performs with real user data.