HF Propagation on QRZCQ - The database for radio hams

Sun data and propagation

Current HF propagation

TODAYS SUN DATA AND HF PROPAGATION

Todays sun data		Latest EIT-304 image // Sun images from NASA
Flux index:	140
Spot number:	152
X-Ray index:	104.7
A index:	43
Kp index:	5.00

Conditions 00-10MHz:	Fair
Conditions 10-20MHz:	Normal
Conditions 20-30MHz:	Normal
We are working on the algorithm, conditions shown here may not correlate with real conditions. The best check is always to power up your HF rig and listen on every band to be sure!

GRAPHICAL SUN DATA HISTORY

PROPAGATION BASED ON WSPRNET* (ALPHA)

Probability of QSO on 23cm between AS and AS is 100%
Probability of QSO on 70cm between AS and AS is 73%
Probability of QSO on 2m between OC and OC is 4%
Probability of QSO on 2m between AS and AS is 25%
Probability of QSO on 4m between EU and EU is 81%
Probability of QSO on 6m between EU and EU is 20%
Probability of QSO on 6m between NA and NA is 86%
Probability of QSO on 6m between OC and OC is 18%
Probability of QSO on 10m between AF and NA is 8%
Probability of QSO on 10m between NA and AF is 6%
Probability of QSO on 10m between EU and AS is 1%
Probability of QSO on 10m between EU and AF is 37%
Probability of QSO on 10m between EU and SA is 3%
Probability of QSO on 10m between AS and EU is 13%
Probability of QSO on 10m between SA and NA is 10%
Probability of QSO on 12m between AS and AF is 5%
Probability of QSO on 12m between NA and AF is 8%
Probability of QSO on 12m between EU and AF is 19%
Probability of QSO on 15m between OC and NA is 22%
Probability of QSO on 15m between SA and NA is 20%
Probability of QSO on 15m between SA and AF is 36%
Probability of QSO on 15m between OC and AS is 7%
Probability of QSO on 15m between AS and OC is 13%
Probability of QSO on 15m between NA and AF is 37%
Probability of QSO on 15m between EU and AF is 43%
Probability of QSO on 17m between NA and AS is 47%
Probability of QSO on 17m between AS and EU is 4%
Probability of QSO on 17m between NA and AF is 32%
Probability of QSO on 17m between NA and EU is 12%
Probability of QSO on 17m between OC and EU is 6%
Probability of QSO on 17m between EU and AF is 20%
Probability of QSO on 20m between SA and NA is 73%
Probability of QSO on 20m between NA and SA is 27%
Probability of QSO on 20m between OC and SA is 10%
Probability of QSO on 20m between AS and EU is 1%
Probability of QSO on 20m between NA and OC is 5%
Probability of QSO on 20m between SA and OC is 66%
Probability of QSO on 20m between SA and AS is 56%
Probability of QSO on 20m between NA and AF is 24%
Probability of QSO on 20m between AS and OC is 11%
Probability of QSO on 20m between EU and NA is 11%
Probability of QSO on 20m between EU and AF is 36%
Probability of QSO on 20m between EU and OC is 20%
Probability of QSO on 30m between EU and OC is 38%
Probability of QSO on 30m between EU and AF is 10%
Probability of QSO on 40m between OC and SA is 47%
Probability of QSO on 40m between NA and EU is 21%
Probability of QSO on 40m between AS and EU is 17%
Probability of QSO on 40m between EU and SA is 36%
Probability of QSO on 40m between SA and NA is 29%
Probability of QSO on 40m between AS and NA is 36%
Probability of QSO on 40m between AF and EU is 29%
Probability of QSO on 40m between AS and OC is 17%
Probability of QSO on 40m between OC and NA is 0%
Probability of QSO on 80m between AS and NA is 47%
Probability of QSO on 80m between NA and EU is 29%
Probability of QSO on 80m between EU and NA is 100%
Probability of QSO on 80m between OC and NA is 42%
Probability of QSO on 160m between NA and EU is 20%
Probability of QSO on 630m between AF and EU is 29%
Probability of QSO on 630m between OC and AS is 100%
Probability of QSO on 630m between AF and AS is 100%

* Propagation probability based on data from WSPRnet (Weak Signal Propagation Reporter Network) Spot Database

PROPAGATION BASED ON DX-CLUSTER

Conditions at 00-10MHz (41%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	0%	0%	0%	0%	0%	0%
AS	0%	0%	0%	1%	1%	1%
EU	0%	0%	73%	0%	2%	0%
NA	0%	4%	1%	4%	6%	1%
OC	0%	0%	0%	1%	1%	1%
SA	0%	2%	0%	0%	0%	0%

Conditions at 10-20MHz (35%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	1%	0%	0%	0%	0%	0%
AS	0%	3%	4%	2%	0%	3%
EU	2%	4%	67%	2%	2%	0%
NA	0%	1%	2%	0%	2%	0%
OC	0%	1%	0%	1%	0%	1%
SA	0%	1%	0%	0%	0%	1%

Conditions at 20-30MHz (20%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	1%	0%	1%	0%	0%	0%
AS	0%	3%	4%	0%	2%	0%
EU	20%	10%	21%	3%	8%	8%
NA	0%	0%	0%	0%	0%	0%
OC	2%	6%	4%	0%	1%	1%
SA	0%	0%	2%	0%	0%	1%

Conditions at 50-54MHz (6%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	0%	0%	0%	0%	0%	0%
AS	0%	0%	0%	0%	3%	0%
EU	0%	0%	23%	0%	0%	0%
NA	0%	0%	0%	70%	0%	0%
OC	0%	0%	0%	0%	0%	0%
SA	0%	0%	0%	0%	0%	0%

HISTORICAL PROPAGATION DATA

Last 30 days of HF propagation

Date and Time	Flux idx.	Spot num.	X-Ray idx.	X-Ray num	A-Index	K-Index	00-10MHz	10-20MHz	20-30MHz
2026-04-03 00:00:00	142	130	104.7	0	43	3.67	Fair	Good	Good
2026-04-02 12:00:00	142	130	104.7	0	8	5.00	Fair	Good	Good
2026-04-02 00:00:00	141	133	104.7	0	8	2.33	Normal	Excellent	Excellent
2026-04-01 12:00:00	141	133	104.7	0	7	1.67	Normal	Excellent	Excellent
2026-04-01 00:00:00	152	143	104.7	0	7	1.33	Normal	Excellent	Excellent
2026-03-31 12:00:00	152	143	104.7	0	12	2.00	Normal	Excellent	Excellent
2026-03-31 00:00:00	158	125	104.7	0	12	1.67	Normal	Excellent	Excellent
2026-03-30 12:00:00	158	125	104.7	0	14	3.00	Fair	Good	Good
2026-03-30 00:00:00	162	116	104.7	0	14	2.00	Fair	Good	Good
2026-03-29 12:00:00	162	116	104.7	0	10	2.33	Normal	Excellent	Excellent
2026-03-29 00:00:00	156	152	104.7	0	10	3.33	Normal	Excellent	Excellent
2026-03-28 12:00:00	156	152	104.7	0	6	2.67	Normal	Excellent	Excellent
2026-03-28 00:00:00	152	113	104.7	0	6	2.33	Normal	Excellent	Excellent
2026-03-27 12:00:00	152	113	104.7	0	10	1.67	Normal	Excellent	Excellent
2026-03-27 00:00:00	140	103	104.7	0	10	2.00	Normal	Excellent	Excellent
2026-03-26 12:00:00	140	103	104.7	0	17	2.33	Fair	Good	Good
2026-03-26 00:00:00	128	113	104.7	0	17	1.00	Normal	Excellent	Excellent
2026-03-25 12:00:00	128	113	104.7	0	16	3.67	Fair	Good	Good
2026-03-25 00:00:00	124	94	104.7	0	16	2.67	Fair	Good	Good
2026-03-24 12:00:00	124	94	104.7	0	28	3.67	Fair	Good	Good
2026-03-24 00:00:00				0			Closed	Closed	Closed
2026-03-23 12:00:00				0			Closed	Closed	Closed
2026-03-23 00:00:00	107	48	104.7	0	75	6.33	Closed	Closed	Closed
2026-03-22 12:00:00	107	48	104.7	0	44	6.67	Closed	Closed	Closed
2026-03-22 00:00:00	102	28	104.7	0	44	3.00	Poor	Closed	Closed
2026-03-21 12:00:00	102	28	104.7	0	34	4.00	Closed	Closed	Closed
2026-03-21 00:00:00	106	38	104.7	0	34	6.67	Closed	Closed	Closed
2026-03-20 12:00:00	106	38	104.7	0	3	3.67	Fair	Poor	Closed
2026-03-20 00:00:00	113	83	104.7	0	3	0.33	Fair	Normal	Normal
2026-03-19 12:00:00	113	83	104.7	0	5	0.67	Fair	Normal	Normal
2026-03-19 00:00:00	111	72	104.7	0	5	1.67	Fair	Poor	Closed
2026-03-18 12:00:00				0			Fair	Poor	Closed
2026-03-18 00:00:00	111	66	104.7	0	4	0.67	Fair	Fair	Fair
2026-03-17 12:00:00	111	66	104.7	0	10	1.67	Fair	Poor	Closed
2026-03-17 00:00:00	109	93	104.7	0	10	1.33	Poor	Fair	Fair
2026-03-16 12:00:00	109	93	104.7	0	17	2.00	Closed	Poor	Closed
2026-03-16 00:00:00	112	85	104.7	0	17	4.00	Closed	Closed	Closed
2026-03-15 12:00:00	112	85	104.7	0	40	3.67	Closed	Poor	Closed
2026-03-15 00:00:00	120	105	104.7	0	40	3.67	Closed	Poor	Closed
2026-03-14 12:00:00	120	105	104.7	0	24	4.00	Closed	Closed	Closed
2026-03-14 00:00:00	121	116	104.7	0	24	5.67	Fair	Good	Good
2026-03-13 12:00:00				0			Fair	Good	Good
2026-03-13 00:00:00	123	120	104.7	0	8	1.33	Normal	Excellent	Excellent
2026-03-12 12:00:00	123	120	104.7	0	9	1.33	Normal	Excellent	Excellent
2026-03-12 00:00:00	127	71	104.7	0	9	1.33	Good	Good	Good
2026-03-11 12:00:00	127	71	104.7	0	14	?	Good	Good	Good
2026-03-11 00:00:00	128	72	104.7	0	14	1.67	Normal	Normal	Normal
2026-03-10 12:00:00	128	72	104.7	0	7	3.00	Good	Good	Good
2026-03-10 00:00:00	135	76	104.7	0	6	2.00	Good	Good	Good
2026-03-09 12:00:00	135	76	104.7	0	22	1.67	Normal	Normal	Normal
2026-03-09 00:00:00	135	75	104.7	0	22	2.33	Normal	Normal	Normal
2026-03-08 12:00:00	135	75	104.7	0	18	2.67	Normal	Normal	Normal
2026-03-08 00:00:00	143	75	104.7	0	18	4.00	Fair	Fair	Fair
2026-03-07 12:00:00	143	75	104.7	0	7	2.33	Good	Good	Good
2026-03-07 00:00:00	146	73	104.7	0	7	3.00	Good	Good	Good
2026-03-06 12:00:00	146	73	104.7	0	4	1.67	Good	Good	Good
2026-03-06 00:00:00	141	71	104.7	0	4	0.67	Excellent	Excellent	Excellent
2026-03-05 12:00:00	141	71	104.7	0	7	0.33	Excellent	Excellent	Excellent
2026-03-05 00:00:00	144	64	104.7	0	7	1.33	Good	Good	Good
2026-03-04 12:00:00	144	64	104.7	0	16	2.00	Normal	Normal	Normal