Planet › Weather & Climate · Global climate · U.S. weather alerts
Weather & Climate
The 2025 global land-and-ocean temperature anomaly uses NOAA GlobalTemp’s 1971–2000 reference period. It describes long-term climate, not today’s weather or a live temperature. Weather alerts are a separate NWS feed.
Numbers tell a bigger story.
Reported snapshot · does not accrue with time
What makes this number move?
Reporting period: 2025
Changes when a new source observation is loaded.
Read NOAA GlobalTemp v6 global land-and-ocean annual anomalies. Keep the downloadable dataset’s 1971–2000 baseline; exclude the incomplete current year.
Long-term climate measure, not current weather. This downloadable series uses 1971–2000, unlike charts using a 20th-century baseline; do not compare the numbers without rebasing.
Reported snapshot · does not accrue with time
What makes this number move?
Reporting period: Active at retrieval
Changes when a new source observation is loaded.
Count unique, unexpired actual alert messages in the NWS active-alert endpoint. The query selects original alert messages; updates and cancellations are not additional alerts.
Messages may overlap geographically. Not a count of distinct storms or affected people.
Global annual temperature anomaly over time
Published values in the current source vintage. The line joins observations; it does not show a historical WN forecast.
View accessible data table
| Period | Official value (°C relative to 1971–2000) |
|---|---|
| 1996 | 0.04 °C |
| 1997 | 0.18 °C |
| 1998 | 0.32 °C |
| 1999 | 0.10 °C |
| 2000 | 0.10 °C |
| 2001 | 0.24 °C |
| 2002 | 0.31 °C |
| 2003 | 0.32 °C |
| 2004 | 0.25 °C |
| 2005 | 0.39 °C |
| 2006 | 0.35 °C |
| 2007 | 0.34 °C |
| 2008 | 0.24 °C |
| 2009 | 0.36 °C |
| 2010 | 0.43 °C |
| 2011 | 0.31 °C |
| 2012 | 0.35 °C |
| 2013 | 0.37 °C |
| 2014 | 0.45 °C |
| 2015 | 0.61 °C |
| 2016 | 0.72 °C |
| 2017 | 0.63 °C |
| 2018 | 0.57 °C |
| 2019 | 0.68 °C |
| 2020 | 0.71 °C |
| 2021 | 0.56 °C |
| 2022 | 0.59 °C |
| 2023 | 0.88 °C |
| 2024 | 0.98 °C |
| 2025 | 0.86 °C |
EXPLORE THE SCALE
What changed in the reported observations?
Global annual temperature anomaly
1996: 0.04 °C → 2025: 0.86 °C.
Difference: 0.82 °C (2015.3% relative to the first displayed observation). This compares the first and last observations in this board’s displayed series, not necessarily consecutive periods or the same seasonal window. Check the source vintage and units before interpreting the change.
READING THIS BOARD
Does a local weather reading describe the climate?
Weather observations describe conditions at a place and time. Climate comparisons require longer records and consistent baselines.
Make a fair comparison
Check station location, observation time and units. Missing or stale observations should not be interpreted as current conditions.
How this number works
Global annual temperature anomaly
Read NOAA GlobalTemp v6 global land-and-ocean annual anomalies. Keep the downloadable dataset’s 1971–2000 baseline; exclude the incomplete current year.
Long-term climate measure, not current weather. This downloadable series uses 1971–2000, unlike charts using a 20th-century baseline; do not compare the numbers without rebasing.
Active U.S. weather alert messages
Count unique, unexpired actual alert messages in the NWS active-alert endpoint. The query selects original alert messages; updates and cancellations are not additional alerts.
Messages may overlap geographically. Not a count of distinct storms or affected people.
Official sources
Audit trail & all metric versions
Source response preserved in immutable content-addressed archive.
SHA-256: b7f2de1d68ac40c432cbf613c97f110849cfa6766365e1ff1c726c6474dad6fa
Global annual temperature anomaly
- Period
- 2025
- Source release date
- Not supplied
- Version
- Official source import · 2025
- Retrieved
- 2026-10-26T15:30:32.007Z
Active U.S. weather alert messages
- Period
- Active at retrieval
- Source release date
- Not supplied
- Version
- NWS CAP · updated 2026-10-26T15:27:47.000Z
- Retrieved
- 2026-10-26T15:30:32.361Z