National Weather ServiceNew JerseyDense Fog AdvisoryArchive to October 1, 2026
Dense Fog Advisories in New Jersey
The National Weather Service issued 10 dense fog advisories for New Jersey in 2025 and 14 a year on average in 2008-2025; in 2021-2025 it had the 41st most of any state. 2026 through September: 16, 77% above the average of 9 for those months in 2008-2025. Ocean was covered most often (139 times since 2008).
How many dense fog advisories does New Jersey get?
Every dense fog advisory that covered part of New Jersey. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 16 |
| 2025 | 10 |
| 2024 | 13 |
| 2023 | 15 |
| 2022 | 24 |
| 2021 | 8 |
| 2020 | 24 |
| 2019 | 13 |
| 2018 | 19 |
| 2017 | 10 |
| 2016 | 6 |
| 2015 | 28 |
| 2014 | 14 |
| 2013 | 16 |
| 2012 | 22 |
| 2011 | 8 |
| 2010 | 3 |
| 2009 | 8 |
| 2008 | 8 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does New Jersey get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in New Jersey?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Ocean | 139 | 31 | May 10, 2026 |
| Southeastern Burlington | 139 | 32 | May 10, 2026 |
| Atlantic | 134 | 32 | April 3, 2026 |
| Atlantic Coastal Cape May | 134 | 28 | April 3, 2026 |
| Western Monmouth | 134 | 29 | May 10, 2026 |
| Coastal Ocean | 133 | 29 | May 10, 2026 |
| Northwestern Burlington | 133 | 29 | May 10, 2026 |
| Cape May | 130 | 28 | April 3, 2026 |
| Eastern Monmouth | 130 | 27 | May 10, 2026 |
| Coastal Atlantic | 128 | 29 | April 3, 2026 |
| Mercer | 127 | 28 | May 10, 2026 |
| Camden | 126 | 29 | May 10, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
What is a dense fog advisory?
A dense fog advisory means fog will cut visibility to a quarter mile or less over a wide area. An advisory is issued for a hazard less serious than a warning that can still cause inconvenience or danger if people are not careful. The national record · Every warning type in New Jersey.