Tropennächte – Anzahl Nächte, Basel-Stadt| Jahr | Basel-Binningen (vorstädtisch, keine Bebauung) | Feldbergstrasse, Basel (Stadtzentrum, geschlossene Bebauung) | St. Johann, Basel (Stadtzentrum, offene Bebauung) | Klingelbergstrasse, Basel (Stadtzentrum, 38 m über Grund) | Sissach (vorstädtisch, offene Bebauung) | Dornach (vorstädtisch, offene Bebauung) |
|---|
| 1995 | 1 | | | | | |
| 1996 | 0 | | | | | |
| 1997 | 0 | | | | | |
| 1998 | 3 | | | | | |
| 1999 | 1 | | | | | |
| 2000 | 0 | | | | | |
| 2001 | 0 | | | | | |
| 2002 | 0 | | | | | |
| 2003 | 8 | | | | | |
| 2004 | 1 | | | | | |
| 2005 | 2 | | | | | |
| 2006 | 4 | | | | | |
| 2007 | 0 | | | | | |
| 2008 | 1 | | | | | |
| 2009 | 1 | | | | | |
| 2010 | 2 | 22 | 16 | 5 | 0 | 7 |
| 2011 | 2 | 14 | 14 | 6 | 2 | 3 |
| 2012 | 4 | 17 | 16 | 6 | 3 | 4 |
| 2013 | 4 | 23 | 18 | 6 | 4 | 7 |
| 2014 | 0 | 12 | 11 | 1 | 0 | 1 |
| 2015 | 11 | 40 | 34 | 21 | 1 | 22 |
| 2016 | 1 | 23 | 19 | 1 | 0 | 4 |
| 2017 | 6 | 40 | 35 | 11 | 1 | 9 |
| 2018 | 3 | 43 | 38 | 9 | 0 | 6 |
| 2019 | 6 | 34 | 31 | 10 | 3 | 10 |
| 2020 | 3 | 28 | 24 | 8 | 1 | 7 |
| 2021 | 1 | 6 | 6 | 5 | 0 | 0 |
| 2022 | 5 | 19 | 13 | 11 | 2 | 4 |
| 2023 | 3 | 24 | 17 | 12 | 1 | 6 |
| 2024 | 2 | 21 | 23 | 13 | 3 | 4 |
| 2025 | 6 | 21 | 16 | | 2 |