Thunderbirds Episode Ratings Heatmap
1965 · 2 Seasons · 32 Episodes · Overall Score: 7.9/10 (25 rated)
Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 1.31), maintaining an average of 7.9.
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 |
|---|---|---|
| Ep 1 | 7.6 | – |
| Ep 2 | 8.0 | – |
| Ep 3 | 9.0 | – |
| Ep 4 | 10.0 | – |
| Ep 5 | 7.0 | – |
| Ep 6 | 7.5 | – |
| Ep 7 | 6.5 | – |
| Ep 8 | 10.0 | – |
| Ep 9 | 8.0 | – |
| Ep 10 | 8.0 | – |
| Ep 11 | 9.0 | – |
| Ep 12 | 10.0 | – |
| Ep 13 | 6.0 | – |
| Ep 14 | 6.0 | – |
| Ep 15 | 8.0 | – |
| Ep 16 | 8.0 | – |
| Ep 17 | 7.0 | – |
| Ep 18 | 7.0 | – |
| Ep 19 | 6.0 | – |
| Ep 20 | 9.0 | – |
| Ep 21 | 8.0 | – |
| Ep 22 | 6.0 | – |
| Ep 23 | 10.0 | – |
| Ep 24 | 7.0 | – |
| Ep 25 | 8.0 | – |
| Ep 26 | – | – |
| Season Avg | 7.9 | – |
Ratings Analysis & Trajectory
Across 2 seasons and 32 episodes, Thunderbirds has earned an overall series rating of 7.9 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 4 ("Terror in New York City"), rated at an extraordinary 10.0/10 with 1 ratings. Conversely, the lowest-rated installment is Season 1, Episode 22 ("Brink of Disaster"), landing at 6.0/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 12 ("Operation Crash-Dive", 10) and Episode 13 ("Vault of Death", 6), a swing of 4 points.
Top 10 Highest Rated Episodes of Thunderbirds
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 4 | Terror in New York City | 10.0 | 1 | Oct 21, 1965 |
| #2 | Season 1, Ep 8 | Desperate Intruder | 10.0 | 1 | Nov 18, 1965 |
| #3 | Season 1, Ep 12 | Operation Crash-Dive | 10.0 | 1 | Dec 16, 1965 |
| #4 | Season 1, Ep 23 | Attack of the Alligators! | 10.0 | 1 | Mar 10, 1966 |
| #5 | Season 1, Ep 11 | Sun Probe | 9.0 | 2 | Dec 9, 1965 |
| #6 | Season 1, Ep 3 | The Perils of Penelope | 9.0 | 1 | Oct 14, 1965 |
| #7 | Season 1, Ep 20 | Move – And You're Dead | 9.0 | 1 | Feb 10, 1966 |
| #8 | Season 1, Ep 2 | Pit of Peril | 8.0 | 2 | Oct 7, 1965 |
| #9 | Season 1, Ep 9 | End of the Road | 8.0 | 2 | Nov 25, 1965 |
| #10 | Season 1, Ep 10 | The Uninvited | 8.0 | 2 | Dec 2, 1965 |