Historical Ranked Monthly Data - Dense Fog /
| Top monthly count |
| Rank |
Value |
Date |
| 1 |
31 |
May 2026 |
| 2 |
31 |
Mar 2026 |
| 3 |
31 |
Jan 2026 |
| 4 |
31 |
Dec 2025 |
| 5 |
31 |
Oct 2025 |
| 6 |
31 |
Aug 2025 |
| 7 |
31 |
Jul 2025 |
| 8 |
31 |
May 2025 |
| 9 |
31 |
Mar 2025 |
| 10 |
31 |
Jan 2025 |
| 11 |
31 |
Dec 2024 |
| 12 |
31 |
Oct 2024 |
| 13 |
31 |
Aug 2024 |
| 14 |
31 |
Jul 2024 |
| 15 |
31 |
May 2024 |
| 16 |
31 |
Mar 2024 |
| 17 |
31 |
Jan 2024 |
| 18 |
31 |
Dec 2023 |
| 19 |
31 |
Oct 2023 |
| 20 |
31 |
Aug 2023 |
| 21 |
31 |
Jul 2023 |
| 22 |
31 |
May 2023 |
| 23 |
31 |
Mar 2023 |
| 24 |
31 |
Jan 2023 |
| 25 |
31 |
Dec 2022 |
| Bottom monthly count |
| Rank |
Value |
Date |
| 1 |
3 |
Jul 2026 |
| 2 |
28 |
Feb 2009 |
| 3 |
28 |
Feb 2010 |
| 4 |
28 |
Feb 2011 |
| 5 |
28 |
Feb 2013 |
| 6 |
28 |
Feb 2014 |
| 7 |
28 |
Feb 2015 |
| 8 |
28 |
Feb 2017 |
| 9 |
28 |
Feb 2018 |
| 10 |
28 |
Feb 2019 |
| 11 |
28 |
Feb 2021 |
| 12 |
28 |
Feb 2022 |
| 13 |
28 |
Feb 2023 |
| 14 |
28 |
Feb 2025 |
| 15 |
28 |
Feb 2026 |
| 16 |
29 |
Feb 2012 |
| 17 |
29 |
Feb 2016 |
| 18 |
29 |
Feb 2020 |
| 19 |
29 |
Feb 2024 |
| 20 |
30 |
Apr 2009 |
| 21 |
30 |
Jun 2009 |
| 22 |
30 |
Sep 2009 |
| 23 |
30 |
Nov 2009 |
| 24 |
30 |
Apr 2010 |
| 25 |
30 |
Jun 2010 |
Dense Fog monthly extremes: most and fewest days with a value.
There are 211 valid months for the chosen period from 2009 to present in London, NW3.
| Top monthly lowest |
| Rank |
Value |
Date |
| 1 |
0 |
Jul 2026 |
| 2 |
0 |
Jun 2026 |
| 3 |
0 |
May 2026 |
| 4 |
0 |
Apr 2026 |
| 5 |
0 |
Mar 2026 |
| 6 |
0 |
Feb 2026 |
| 7 |
0 |
Jan 2026 |
| 8 |
0 |
Dec 2025 |
| 9 |
0 |
Nov 2025 |
| 10 |
0 |
Oct 2025 |
| 11 |
0 |
Sep 2025 |
| 12 |
0 |
Aug 2025 |
| 13 |
0 |
Jul 2025 |
| 14 |
0 |
Jun 2025 |
| 15 |
0 |
May 2025 |
| 16 |
0 |
Apr 2025 |
| 17 |
0 |
Mar 2025 |
| 18 |
0 |
Feb 2025 |
| 19 |
0 |
Jan 2025 |
| 20 |
0 |
Dec 2024 |
| 21 |
0 |
Nov 2024 |
| 22 |
0 |
Oct 2024 |
| 23 |
0 |
Sep 2024 |
| 24 |
0 |
Aug 2024 |
| 25 |
0 |
Jul 2024 |
| Bottom monthly lowest |
| Rank |
Value |
Date |
| 1 |
0 |
Jan 2009 |
| 2 |
0 |
Feb 2009 |
| 3 |
0 |
Mar 2009 |
| 4 |
0 |
Apr 2009 |
| 5 |
0 |
May 2009 |
| 6 |
0 |
Jun 2009 |
| 7 |
0 |
Jul 2009 |
| 8 |
0 |
Aug 2009 |
| 9 |
0 |
Sep 2009 |
| 10 |
0 |
Oct 2009 |
| 11 |
0 |
Nov 2009 |
| 12 |
0 |
Dec 2009 |
| 13 |
0 |
Jan 2010 |
| 14 |
0 |
Feb 2010 |
| 15 |
0 |
Mar 2010 |
| 16 |
0 |
Apr 2010 |
| 17 |
0 |
May 2010 |
| 18 |
0 |
Jun 2010 |
| 19 |
0 |
Jul 2010 |
| 20 |
0 |
Aug 2010 |
| 21 |
0 |
Sep 2010 |
| 22 |
0 |
Oct 2010 |
| 23 |
0 |
Nov 2010 |
| 24 |
0 |
Dec 2010 |
| 25 |
0 |
Jan 2011 |
Dense Fog monthly extremes: highest and lowest monthly minima.
There are 211 valid months for the chosen period from 2009 to present in London, NW3.
| Top monthly highest |
| Rank |
Value |
Date |
| 1 |
1 |
Apr 2026 |
| 2 |
1 |
Mar 2026 |
| 3 |
1 |
Jan 2026 |
| 4 |
1 |
Dec 2025 |
| 5 |
1 |
Dec 2024 |
| 6 |
1 |
Oct 2024 |
| 7 |
1 |
Sep 2024 |
| 8 |
1 |
May 2024 |
| 9 |
1 |
Feb 2024 |
| 10 |
1 |
Dec 2023 |
| 11 |
1 |
Nov 2023 |
| 12 |
1 |
Feb 2023 |
| 13 |
1 |
Jan 2023 |
| 14 |
1 |
Dec 2022 |
| 15 |
1 |
Mar 2022 |
| 16 |
1 |
Jan 2022 |
| 17 |
1 |
Dec 2021 |
| 18 |
1 |
Mar 2021 |
| 19 |
1 |
Feb 2021 |
| 20 |
1 |
Jan 2021 |
| 21 |
1 |
Dec 2020 |
| 22 |
1 |
Nov 2020 |
| 23 |
1 |
Feb 2020 |
| 24 |
1 |
Dec 2019 |
| 25 |
1 |
Nov 2019 |
| Bottom monthly highest |
| Rank |
Value |
Date |
| 1 |
0 |
Feb 2009 |
| 2 |
0 |
Mar 2009 |
| 3 |
0 |
Apr 2009 |
| 4 |
0 |
May 2009 |
| 5 |
0 |
Jun 2009 |
| 6 |
0 |
Jul 2009 |
| 7 |
0 |
Aug 2009 |
| 8 |
0 |
Sep 2009 |
| 9 |
0 |
Oct 2009 |
| 10 |
0 |
Jan 2010 |
| 11 |
0 |
Feb 2010 |
| 12 |
0 |
Mar 2010 |
| 13 |
0 |
Apr 2010 |
| 14 |
0 |
May 2010 |
| 15 |
0 |
Jun 2010 |
| 16 |
0 |
Jul 2010 |
| 17 |
0 |
Aug 2010 |
| 18 |
0 |
Sep 2010 |
| 19 |
0 |
Oct 2010 |
| 20 |
0 |
Nov 2010 |
| 21 |
0 |
Jan 2011 |
| 22 |
0 |
Feb 2011 |
| 23 |
0 |
Apr 2011 |
| 24 |
0 |
May 2011 |
| 25 |
0 |
Jun 2011 |
Dense Fog monthly extremes: highest and lowest monthly maxima.
There are 211 valid months for the chosen period from 2009 to present in London, NW3.