Full Aurora Odds Index Data — All 50 States

Every state’s Aurora Viewing Chance (%) alongside the underlying metrics used in the index.

Aurora Viewing Chance (%) is the same value used throughout the study (mathematically equivalent to implied probability), expressed in clear percentage form. Higher values indicate more favorable long-term conditions for aurora visibility.

Rank	State	Capital	Aurora Viewing Chance (%)	Final Score (0–100)	Aurora Reach Score	Clear Days / Year	Darkness Score	Avg Humidity (%)
1	Arizona	Phoenix	60.00	67.97	31.88	193	75	38.5
2	Nevada	Carson City	59.42	67.26	46.71	158	74	38.3
3	New Mexico	Santa Fe	56.91	64.22	37.58	167	82	45.9
4	Alaska	Juneau	55.64	62.68	100	61	95	71.6
5	Utah	Salt Lake City	52.58	58.98	50.71	125	80	51.7
6	Idaho	Boise	51.84	58.08	58.77	120	84	62.4
7	Colorado	Denver	51.11	57.20	48.18	136	72	54.1
8	Wyoming	Cheyenne	50.79	56.81	52.06	114	86	57.1
9	Montana	Helena	49.83	55.65	66.00	82	88	60.4
10	South Dakota	Pierre	47.41	52.72	60.16	104	78	66.4
11	North Dakota	Bismarck	46.41	51.51	66.57	93	78	70.9
12	Maine	Augusta	43.42	47.88	60.46	101	68	71.7
13	Nebraska	Lincoln	43.41	47.87	50.85	117	62	65.8
14	Kansas	Topeka	43.26	47.69	46.38	128	60	65.7
15	Minnesota	Saint Paul	41.51	45.57	62.09	95	58	70.4
16	Oklahoma	Oklahoma City	40.45	44.28	37.02	139	50	64.0
17	New Hampshire	Concord	40.41	44.23	58.11	90	63	70.4
18	Oregon	Salem	40.04	43.79	61.34	68	70	68.6
19	Iowa	Des Moines	38.95	42.47	52.82	105	56	72.4
20	Missouri	Jefferson City	38.59	42.03	45.16	115	54	69.2
21	California	Sacramento	38.17	41.53	45.16	146	14	61.0
22	Wisconsin	Madison	37.93	41.23	56.93	89	55	71.6
23	Vermont	Montpelier	36.41	39.40	60.33	58	66	71.7
24	Arkansas	Little Rock	35.69	38.51	35.49	123	52	70.9
25	Washington	Olympia	35.16	37.87	66.82	58	48	71.4
26	Texas	Austin	34.23	36.74	23.83	135	45	64.9
27	Kentucky	Frankfort	33.77	36.19	44.18	93	50	70.3
28	Michigan	Lansing	32.97	35.23	56.04	71	46	72.1
29	Tennessee	Nashville	32.52	34.68	38.89	102	44	69.4
30	Virginia	Richmond	32.50	34.66	42.61	100	38	68.7
31	Pennsylvania	Harrisburg	32.15	34.23	49.60	87	36	69.6
32	South Carolina	Columbia	32.06	34.12	33.53	115	40	69.1
33	North Carolina	Raleigh	31.70	33.68	37.84	109	38	70.6
34	Massachusetts	Boston	31.67	33.65	55.09	98	18	71.1
35	West Virginia	Charleston	31.43	33.36	43.55	60	64	69.7
36	Maryland	Annapolis	31.31	33.21	46.19	105	22	68.8
37	Rhode Island	Providence	30.64	32.40	53.45	98	16	71.4
38	Indiana	Indianapolis	29.96	31.57	48.35	88	30	72.0
39	Connecticut	Hartford	29.63	31.17	53.30	82	20	69.2
40	New York	Albany	29.41	30.91	55.84	63	32	70.7
41	Georgia	Atlanta	29.19	30.64	32.86	112	32	71.1
42	New Jersey	Trenton	28.86	30.25	49.46	94	12	68.5
43	Ohio	Columbus	28.62	29.95	48.86	72	34	71.5
44	Illinois	Springfield	28.30	29.56	48.43	95	14	70.9
45	Delaware	Dover	28.22	29.46	46.67	97	15	70.9
46	Mississippi	Jackson	26.39	27.26	29.63	111	28	73.6
47	Alabama	Montgomery	23.50	23.75	29.80	99	28	77.1
48	Louisiana	Baton Rouge	22.61	22.67	24.36	101	26	74.0
49	Florida	Tallahassee	19.31	18.68	24.27	101	10	74.5
50	Hawaii	Honolulu	10.00	7.39	0.00	90	10	73.3