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The Keeling Curve

@keelingcurve.bsky.social

Official daily update on atmospheric CO2 levels in the post-400 ppm era from Scripps Institution of Oceanography's iconic Keeling Curve.

3,269 Followers  |  286 Following  |  463 Posts  |  Joined: 04.04.2024  |  1.6623

Latest posts by keelingcurve.bsky.social on Bluesky

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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

425.97 parts per million (ppm) CO2 in air 01-Aug-2025
keelingcurve.ucsd.edu

04.08.2025 03:47 — 👍 16    🔁 8    💬 0    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

426.41 parts per million (ppm) CO2 in air 31-Jul-2025
keelingcurve.ucsd.edu

01.08.2025 21:37 — 👍 10    🔁 4    💬 0    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

426.52 parts per million (ppm) CO2 in air 30-Jul-2025
keelingcurve.ucsd.edu

31.07.2025 16:55 — 👍 17    🔁 9    💬 0    📌 1
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"A “drill, baby, drill” policy calls for more capacity for climate tracking and assessment, not less."

Good piece by Ralph Keeling of @keelingcurve.bsky.social

www.economist.com/by-invitatio...

31.07.2025 13:09 — 👍 9    🔁 6    💬 2    📌 0
Opinion piece in The Economist on what is lost if the Keeling Curve is cut July 30, 2025 opinion piece by Scripps CO2 Group Director and Keeling Curve Foundation President Ralph Keeling on what is at stake with U.S. President Donald Trump's planned cut to Mauna Loa Observato...

Unpaywalled version: keelingcurve.ucsd.edu/2025/07/30/o...

30.07.2025 20:46 — 👍 5    🔁 4    💬 0    📌 0
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Donald Trump’s war on climate science has staggering implications Even a policy of “drill, baby, drill” would imply more climate research, not its evisceration, says Ralph Keeling

New comment in @TheEconomist from @Scripps_Ocean's Ralph Keeling on Trump and climate science: www.economist.com/by-invitatio...

30.07.2025 20:17 — 👍 8    🔁 7    💬 2    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

426.27 parts per million (ppm) CO2 in air 29-Jul-2025
keelingcurve.ucsd.edu

30.07.2025 20:11 — 👍 16    🔁 11    💬 0    📌 1
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

426.58 parts per million (ppm) CO2 in air 28-Jul-2025
keelingcurve.ucsd.edu

29.07.2025 17:58 — 👍 17    🔁 8    💬 0    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

426.52 parts per million (ppm) CO2 in air 27-Jul-2025
keelingcurve.ucsd.edu

28.07.2025 19:56 — 👍 10    🔁 7    💬 1    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

425.42 parts per million (ppm) CO2 in air 26-Jul-2025
keelingcurve.ucsd.edu

27.07.2025 19:28 — 👍 19    🔁 10    💬 0    📌 1
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 25-Jul-2025
keelingcurve.ucsd.edu

27.07.2025 19:26 — 👍 5    🔁 1    💬 0    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

427.58 parts per million (ppm) CO2 in air 24-Jul-2025 keelingcurve.ucsd.edu

25.07.2025 16:32 — 👍 18    🔁 8    💬 1    📌 1
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

427.35 parts per million (ppm) CO2 in air 23-Jul-2025
keelingcurve.ucsd.edu

24.07.2025 16:26 — 👍 20    🔁 6    💬 0    📌 2
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

426.98 parts per million (ppm) CO2 in air 22-Jul-2025
keelingcurve.ucsd.edu

23.07.2025 20:56 — 👍 23    🔁 9    💬 0    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 21-Jul-2025
keelingcurve.ucsd.edu

22.07.2025 22:26 — 👍 5    🔁 1    💬 0    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 19-Jul-2025
keelingcurve.ucsd.edu

20.07.2025 20:42 — 👍 8    🔁 3    💬 0    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

427.25 parts per million (ppm) CO2 in air 18-Jul-2025
keelingcurve.ucsd.edu

19.07.2025 19:50 — 👍 33    🔁 19    💬 0    📌 2

2/2 427.87 parts per million (ppm) CO2 in air 13-Jul-2025

428.26 parts per million (ppm) CO2 in air 10-Jul-2025

428.18 parts per million (ppm) CO2 in air 09-Jul-2025

19.07.2025 19:32 — 👍 6    🔁 1    💬 0    📌 0

1/2 Updated readings for recent days are now available following a recent calibration cylinder change:

427.83 parts per million (ppm) CO2 in air 17-Jul-2025

427.74 parts per million (ppm) CO2 in air 16-Jul-2025

427.41 parts per million (ppm) CO2 in air 15-Jul-2025

19.07.2025 19:31 — 👍 17    🔁 6    💬 1    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 17-Jul-2025
keelingcurve.ucsd.edu

18.07.2025 17:16 — 👍 6    🔁 1    💬 0    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 16-Jul-2025
keelingcurve.ucsd.edu

18.07.2025 05:46 — 👍 7    🔁 0    💬 0    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 15-Jul-2025
keelingcurve.ucsd.edu

17.07.2025 00:38 — 👍 2    🔁 1    💬 0    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable
14-Jul-2025 keelingcurve.ucsd.edu

15.07.2025 16:07 — 👍 7    🔁 1    💬 0    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 13-Jul-2025
keelingcurve.ucsd.edu

14.07.2025 16:09 — 👍 5    🔁 0    💬 0    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 12-Jul-2025
keelingcurve.ucsd.edu

13.07.2025 19:58 — 👍 6    🔁 3    💬 0    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Baseline reading not available, data too variable 11-Jul-2025
keelingcurve.ucsd.edu

12.07.2025 16:34 — 👍 6    🔁 2    💬 0    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

428.23 parts per million (ppm) CO2 in air
10-Jul-2025 keelingcurve.ucsd.edu

11.07.2025 17:16 — 👍 15    🔁 6    💬 0    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

428.13 parts per million (ppm) CO2 in air 09-Jul-2025 keelingcurve.ucsd.edu

10.07.2025 17:27 — 👍 18    🔁 11    💬 0    📌 0
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The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

428.24 parts per million (ppm) CO2 in air 08-Jul-2025 keelingcurve.ucsd.edu

09.07.2025 16:14 — 👍 17    🔁 6    💬 1    📌 0
Preview
The Keeling Curve The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

428.19 parts per million (ppm) CO2 in air 07-Jul-2025 keelingcurve.ucsd.edu

08.07.2025 16:49 — 👍 18    🔁 8    💬 0    📌 3

@keelingcurve is following 20 prominent accounts