Eureka Episode Ratings Heatmap
2006 · 5 Seasons · 77 Episodes · Overall Score: 8.1/10 (12 rated)
Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.35), maintaining an average of 8.1.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 | Season 4 | Season 5 |
|---|---|---|---|---|---|
| Ep 1 | 8.1 | – | – | – | – |
| Ep 2 | 8.0 | – | – | – | – |
| Ep 3 | 8.2 | – | – | – | – |
| Ep 4 | 8.0 | – | – | – | – |
| Ep 5 | 8.2 | – | – | – | – |
| Ep 6 | 8.0 | – | – | – | – |
| Ep 7 | 7.8 | – | – | – | – |
| Ep 8 | 7.7 | – | – | – | – |
| Ep 9 | 7.8 | – | – | – | – |
| Ep 10 | 8.2 | – | – | – | – |
| Ep 11 | 8.8 | – | – | – | – |
| Ep 12 | 8.8 | – | – | – | – |
| Ep 13 | – | – | – | – | – |
| Ep 14 | – | – | – | – | – |
| Ep 15 | – | – | – | – | – |
| Ep 16 | – | – | – | – | – |
| Ep 17 | – | – | – | – | – |
| Ep 18 | – | – | – | – | – |
| Ep 19 | – | – | – | – | – |
| Ep 20 | – | – | – | – | – |
| Ep 21 | – | – | – | – | – |
| Season Avg | 8.1 | – | – | – | – |
Ratings Analysis & Trajectory
Across 5 seasons and 77 episodes, Eureka has earned an overall series rating of 8.1 out of 10. The series displays remarkable consistency across its narrative arc, maintaining reliable ratings from premiere to conclusion.
The single highest-rated hour of television in the series is Season 1, Episode 12 ("Once in a Lifetime"), rated at an extraordinary 8.8/10 with 11 ratings. Conversely, the lowest-rated installment is Season 1, Episode 8 ("Right as Raynes"), landing at 7.7/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 3 ("Before I Forget", 8.2) and Episode 4 ("Alienated", 8), a swing of 0.2 points.
Top 10 Highest Rated Episodes of Eureka
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 12 | Once in a Lifetime | 8.8 | 11 | Oct 3, 2006 |
| #2 | Season 1, Ep 11 | H.O.U.S.E. Rules | 8.8 | 10 | Sep 26, 2006 |
| #3 | Season 1, Ep 3 | Before I Forget | 8.2 | 19 | Aug 1, 2006 |
| #4 | Season 1, Ep 5 | Invincible | 8.2 | 15 | Aug 15, 2006 |
| #5 | Season 1, Ep 10 | Purple Haze | 8.2 | 10 | Sep 19, 2006 |
| #6 | Season 1, Ep 1 | Pilot | 8.1 | 25 | Jul 18, 2006 |
| #7 | Season 1, Ep 2 | Many Happy Returns | 8.0 | 21 | Jul 25, 2006 |
| #8 | Season 1, Ep 4 | Alienated | 8.0 | 16 | Aug 8, 2006 |
| #9 | Season 1, Ep 6 | Dr. Nobel | 8.0 | 13 | Aug 22, 2006 |
| #10 | Season 1, Ep 7 | Blink | 7.8 | 13 | Aug 29, 2006 |