Historical Ranked Daily Data for April - Max 1hr Hum Fall / %
Weather Variable:
| Highest | ||
| Rank | Value | Date |
| 1 | 31 | 17 Apr 2012 |
| 2 | 30 | 27 Apr 2015 |
| 3 | 28 | 26 Apr 2018 |
| 4 | 28 | 06 Apr 2016 |
| 5 | 27 | 11 Apr 2015 |
| 6 | 26 | 25 Apr 2026 |
| 7 | 26 | 11 Apr 2025 |
| 8 | 26 | 06 Apr 2025 |
| 9 | 26 | 26 Apr 2013 |
| 10 | 25 | 13 Apr 2019 |
| 11 | 25 | 21 Apr 2014 |
| 12 | 25 | 29 Apr 2012 |
| 13 | 24 | 07 Apr 2025 |
| 14 | 23 | 13 Apr 2021 |
| 15 | 23 | 26 Apr 2020 |
| 16 | 23 | 13 Apr 2014 |
| 17 | 22 | 16 Apr 2026 |
| 18 | 22 | 24 Apr 2016 |
| 19 | 22 | 21 Apr 2016 |
| 20 | 22 | 17 Apr 2015 |
| 21 | 22 | 02 Apr 2015 |
| 22 | 22 | 27 Apr 2014 |
| 23 | 22 | 17 Apr 2011 |
| 24 | 22 | 17 Apr 2010 |
| 25 | 21 | 17 Apr 2025 |
| Lowest | ||
| Rank | Value | Date |
| 1 | 1 | 11 Apr 2009 |
| 2 | 1 | 17 Apr 2009 |
| 3 | 1 | 20 Apr 2017 |
| 4 | 1 | 09 Apr 2018 |
| 5 | 2 | 12 Apr 2009 |
| 6 | 2 | 09 Apr 2012 |
| 7 | 2 | 28 Apr 2012 |
| 8 | 2 | 25 Apr 2014 |
| 9 | 2 | 08 Apr 2018 |
| 10 | 3 | 16 Apr 2009 |
| 11 | 3 | 22 Apr 2016 |
| 12 | 3 | 14 Apr 2017 |
| 13 | 3 | 11 Apr 2018 |
| 14 | 3 | 12 Apr 2018 |
| 15 | 3 | 28 Apr 2018 |
| 16 | 4 | 27 Apr 2009 |
| 17 | 4 | 04 Apr 2017 |
| 18 | 4 | 29 Apr 2018 |
| 19 | 4 | 07 Apr 2019 |
| 20 | 4 | 08 Apr 2019 |
| 21 | 4 | 28 Apr 2020 |
| 22 | 5 | 12 Apr 2010 |
| 23 | 5 | 12 Apr 2011 |
| 24 | 5 | 11 Apr 2013 |
| 25 | 5 | 06 Apr 2014 |
Ranked daily data from 2009 to present for London, NW3. For Max 1hr Hum Fall, there are 531 valid values in Apr.