Solar flares — Aug 18, 2025
The strongest solar flare in the day
Flare of C2.1 level (normal) — in 22:53
Solar activity index
Value for Aug 18, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Aug 17, 2025 to Aug 18, 2025
Time zone — UTC+01 (London) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Aug 18, 2025
Total number of flares of class C and higher — 1 flare
C type — 1 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C2.1
|
22:31 | 22:53 | 23:09 | 4188 |