Plot and data output of Dst and AE indices (Hourly Values)

Dst: [1957 - ], AE: [Jul., 1957 - ]
AU/AL/AO is available for since 1966.
The AE indices for 1988 (Jul. - Dec.) and 1989 (except for Mar.) have not yet been derived.

Provisional AE index (to be updated in the future) for May 10-14 2024 are now available. [June 3, 2024]
Final Dst index for 2017 - 2020 are now available. *caution about the index regarding to the data missing (datails) [August 5, 2024]
Provisional AE index for 2020 are now available. [July 30, 2025]
Provisional Dst index for November 2024 - June 2025 are now available. [October 2, 2025]

AE Index Home Page / On AE Indices
Dst Index Home Page / On Dst Index
ASY/SYM and AE indices (1 min. values)

This service now delivers the data through our HAPI server (Heliophysics Application Programmer's Interface). The data values are the same as before. For scripts, please use the HAPI URL shown below instead of /cgi-bin/dstae-cgi, which will be discontinued.
Period
Index
Data format

URL of this request (usable from scripts as is):

-

Examples:

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# Python (pip install hapiclient)
from hapiclient import hapi
data, meta = hapi("https://wdc.kugi.kyoto-u.ac.jp/hapi", "hour_dst",
                  "", "2015-01-01T00:00:00Z", "2015-02-01T00:00:00Z")

Available datasets: hapi/catalog   Interactive plot: hapi/plot