Historical Ranked Daily Data for Sep - Max 1hr Hum Rise / %
Weather Variable:
| Highest | ||
| Rank | Value | Date |
| 1 | 32 | 13 Sep 2019 |
| 2 | 24 | 15 Sep 2025 |
| 3 | 24 | 15 Sep 2022 |
| 4 | 23 | 11 Sep 2025 |
| 5 | 22 | 11 Sep 2024 |
| 6 | 21 | 01 Sep 2025 |
| 7 | 21 | 13 Sep 2017 |
| 8 | 20 | 11 Sep 2015 |
| 9 | 19 | 12 Sep 2025 |
| 10 | 19 | 21 Sep 2023 |
| 11 | 19 | 24 Sep 2020 |
| 12 | 19 | 09 Sep 2017 |
| 13 | 19 | 21 Sep 2012 |
| 14 | 19 | 13 Sep 2011 |
| 15 | 18 | 02 Sep 2020 |
| 16 | 18 | 03 Sep 2017 |
| 17 | 18 | 09 Sep 2012 |
| 18 | 17 | 16 Sep 2020 |
| 19 | 17 | 24 Sep 2018 |
| 20 | 17 | 24 Sep 2015 |
| 21 | 17 | 27 Sep 2012 |
| 22 | 17 | 03 Sep 2009 |
| 23 | 16 | 06 Sep 2025 |
| 24 | 16 | 03 Sep 2018 |
| 25 | 16 | 11 Sep 2017 |
| Lowest | ||
| Rank | Value | Date |
| 1 | 1 | 20 Sep 2014 |
| 2 | 2 | 27 Sep 2020 |
| 3 | 2 | 14 Sep 2021 |
| 4 | 2 | 06 Sep 2024 |
| 5 | 3 | 14 Sep 2010 |
| 6 | 3 | 24 Sep 2010 |
| 7 | 3 | 27 Sep 2010 |
| 8 | 3 | 09 Sep 2011 |
| 9 | 3 | 09 Sep 2013 |
| 10 | 3 | 13 Sep 2013 |
| 11 | 3 | 29 Sep 2013 |
| 12 | 3 | 06 Sep 2016 |
| 13 | 3 | 20 Sep 2016 |
| 14 | 3 | 04 Sep 2017 |
| 15 | 3 | 04 Sep 2021 |
| 16 | 3 | 23 Sep 2022 |
| 17 | 3 | 24 Sep 2023 |
| 18 | 3 | 30 Sep 2024 |
| 19 | 4 | 07 Sep 2009 |
| 20 | 4 | 10 Sep 2010 |
| 21 | 4 | 11 Sep 2010 |
| 22 | 4 | 28 Sep 2010 |
| 23 | 4 | 03 Sep 2011 |
| 24 | 4 | 21 Sep 2013 |
| 25 | 4 | 01 Sep 2014 |
Ranked daily data from 2009 to present for London, NW3. For Max 1hr Hum Rise, there are 485 valid values in Sep.