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Free · real-time · open data
Space weather and HF propagation, in one free API
Live solar and geomagnetic data, global ionosphere maps, and path predictions between any two places — checked against millions of real FT8 and WSPR reception reports.
Conditions now
Updated 2026-10-16 22:53 UTC
- Solar flux (SFI)
- 131sfu
- 4 h ago
- Sunspot number
- 104
- 2 d ago
- Kp index
- 3.67G0
- 6 h ago
- X-ray
- B7.7R0
- 43 min ago
- Solar wind
- 463km/s
- Bz 3.9 nT
- NOAA scales
- R0 S0 G0
- 160 alerts in 24 h
Global band conditions
Share of the day and night side where each band is open for 3,000 km hops (from the live ionosphere map).
| Band | Day | Night |
|---|---|---|
| 80m | OPEN · 100% | OPEN · 100% |
| 60m | OPEN · 100% | OPEN · 100% |
| 40m | OPEN · 100% | OPEN · 97% |
| 30m | OPEN · 98% | OPEN · 70% |
| 20m | OPEN · 93% | MARGINAL · 48% |
| 17m | OPEN · 75% | MARGINAL · 29% |
| 15m | OPEN · 60% | MARGINAL · 16% |
| 12m | MARGINAL · 32% | CLOSED · 4% |
| 10m | CLOSED · 11% | CLOSED · 0% |
Will my signal get through?
Enter places, coordinates or Maidenhead locators.
What you get
Unified data API
Solar flux, sunspots, Kp/Ap, X-rays, solar wind, TEC and MUF from NOAA, GFZ, SILSO and GIRO — one JSON format, with source and update time on every response.
Path predictions with confidence
Reliability, availability and best frequencies for any path, time and mode, driven by the live global ionosphere map — with the model's limits stated plainly.
Real-world evidence
Millions of PSK Reporter and WSPR reports show where the bands are actually open right now, next to every prediction.