| Stations: 2889
|
Cloud Cover |
Cloud Base |
| Adak (5 m, Alaska) |
8 |
200-300m |
| Nome Airport (6 m, Alaska) |
8 |
600-1000m |
| Cold Bay Airport (31 m, Alaska) |
8 |
600-1000m |
| Ralph Wien Memorial Airport (5 m, Alaska) |
not detectable |
50-100m |
| Bethel Airport (44 m, Alaska) |
0 |
>2500m |
| Aniak Airport (26 m, Alaska) |
0 |
>2500m |
| Lihue Airport (32 m, Hawaii) |
6 |
600-1000m |
| Port Heiden Airport (29 m, Alaska) |
2 |
>2500m |
| Dillingham Airport (29 m, Alaska) |
0 |
>2500m |
| Daniel K. Inouye Intl. Airport (5 m, Hawaii) |
4 |
600-1000m |
| King Salmon Airport (14 m, Alaska) |
0 |
>2500m |
| Kahului Airport (20 m, Hawaii) |
4 |
600-1000m |
| McGrath Airport (103 m, Alaska) |
8 |
600-1000m |
| Hilo Intl. Airport (10 m, Hawaii) |
8 |
600-1000m |
| Iliamna Airport (49 m, Alaska) |
0 |
>2500m |
| Kodiak Airport (34 m, Alaska) |
0 |
>2500m |
| Bettles Airport (196 m, Alaska) |
8 |
300-600m |
| Talkeetna Airport (109 m, Alaska) |
8 |
300-600m |
| Ted Stevens Anchorage Intl. Airport (42 m, Alaska) |
4 |
1500-2000m |
| Fairbanks Intl. Airport (135 m, Alaska) |
8 |
200-300m |
| Middleton Island Airport (14 m, Alaska) |
6 |
300-600m |
| Allen Army Airfield (391 m, Alaska) |
8 |
300-600m |
| Gulkana Airport (481 m, Alaska) |
0 |
>2500m |
| Fort Yukon Airport (135 m, Alaska) |
8 |
1000-1500m |
| Yakutat Airport (13 m, Alaska) |
0 |
>2500m |
| Mayo Airport (504 m, Yukon) |
7 |
1500-2000m |
| Erik Nielsen Whitehorse Intl. Airport (706 m, Yukon) |
3 |
1000-1500m |
| Aklavik Airport (7 m, Northwest Territories) |
4 |
|
| Fort McPherson Airport (43 m, Northwest Territories) |
8 |
|
| Juneau Intl. Airport (7 m, Alaska) |
2 |
2000-2500m |
| Inuvik (68 m, Northwest Territories) |
6 |
|
| Prince Rupert Airport (36 m, British Columbia) |
0 |
|
| Stewart Airport (7 m, British Columbia) |
4 |
|
| Watson Lake Airport (690 m, Yukon) |
2 |
|
| Terrace Airport (217 m, British Columbia) |
7 |
2000-2500m |
| Port Hardy Airport (22 m, British Columbia) |
7 |
600-1000m |
| Norman Wells (78 m, Northwest Territories) |
5 |
>2500m |
| Bella Coola Airport (35 m, British Columbia) |
6 |
|
| Fort Norman AP (98 m, Northwest Territories) |
4 |
|
| Campbell River Airport (106 m, British Columbia) |
8 |
|
| Brookings Airport (140 m, Oregon) |
8 |
|
| Southwest Oregon Regional Airport (1 m, Oregon) |
8 |
|
| Crescent City (17 m, California) |
6 |
|
| Arcata (18 m, California) |
6 |
2000-2500m |
| Murray Field (18 m, California) |
6 |
|
| Rohnerville Airport (120 m, California) |
6 |
|
| Newport Airport (37 m, Oregon) |
8 |
|
| Bowerman Airport (3 m, Washington) |
8 |
|
| Astoria Regional Airport (7 m, Oregon) |
6 |
600-1000m |
| Nanaimo Airport (28 m, British Columbia) |
6 |
|
| Tillamook Airport (11 m, Oregon) |
6 |
|
| William R. Fairchild Intl. Airport (88 m, Washington) |
2 |
|
| Victoria (IAP) (19 m, British Columbia) |
7 |
600-1000m |
| Délı̨nę Airport (176 m, Northwest Territories) |
6 |
|
| Roseburg Regional Airport (160 m, Oregon) |
8 |
|
| Corvallis Airport (75 m, Oregon) |
8 |
|
| Eugene Airport (114 m, Oregon) |
8 |
600-1000m |
| Ukiah Airport (187 m, California) |
6 |
|
| Vancouver Airport (4 m, British Columbia) |
8 |
600-1000m |
| Sanderson Field Airport (85 m, Washington) |
8 |
|
| Friday Harbor Airport (33 m, Washington) |
0 |
|
| McNary Field Airport (61 m, Oregon) |
8 |
600-1000m |
| Chehalis Airport (54 m, Washington) |
6 |
|
| Whistler Airport (658 m, British Columbia) |
8 |
|
| Hillsboro Airport (62 m, Oregon) |
8 |
|
| Weaverville (716 m, California) |
6 |
|
| Southwest Washington Regional Airport (4 m, Washington) |
8 |
|
| Olympia Regional Airport (61 m, Washington) |
4 |
600-1000m |
| Orcas Island Airport (9 m, Washington) |
6 |
|
| Medford Airport (397 m, Oregon) |
8 |
2000-2500m |
| Scappoose Industrial Airpark Airport (16 m, Oregon) |
8 |
|
| Santa Rose Airport (38 m, California) |
6 |
|
| Aurora State Airport (60 m, Oregon) |
8 |
|
| Bremerton Ntnl Arpt (147 m, Washington) |
6 |
|
| Trinity Center (728 m, California) |
6 |
|
| Naval Air Station Whidbey (10 m, Washington) |
6 |
|
| Pearson Field (8 m, Washington) |
8 |
|
| Portland Airport (12 m, Oregon) |
6 |
600-1000m |
| Petaluma Airport (27 m, California) |
6 |
|
| Gray Army Airfield (89 m, Washington) |
8 |
|
| Fort Nelson Airport (389 m, British Columbia) |
3 |
1000-1500m |
| Tacoma Narrows Airport (89 m, Washington) |
6 |
|
| Marin (1 m, California) |
6 |
|
| Bellingham Intl. Airport (45 m, Washington) |
8 |
|
| Quesnel Airport (545 m, British Columbia) |
8 |
|
| Eddie Andreini Sr. Airfield (20 m, California) |
0 |
|
| McChord Field (88 m, Washington) |
8 |
|
| Siskiyou (807 m, California) |
8 |
|
| Skagit Regional Airport (44 m, Washington) |
2 |
|
| Portland- Troutdale Airport (11 m, Oregon) |
8 |
|
| San Francisco Intl. Airport (5 m, California) |
6 |
1000-1500m |
| Abbotsford Airport (58 m, British Columbia) |
7 |
300-600m |
| Mount Shasta (1077 m, California) |
8 |
|
| Seattle (137 m, Washington) |
8 |
1000-1500m |
| Boeing Field Airport (6 m, Washington) |
8 |
|
| Redding Airport (153 m, California) |
8 |
600-1000m |
| Paine Field (185 m, Washington) |
6 |
|
| Napa Airport (10 m, California) |
6 |
|
| Puyallup Airport (164 m, Washington) |
4 |
|
| San Carlos Airport (1 m, California) |
6 |
|
| Red Bluff Airport (108 m, California) |
6 |
1500-2000m |
| Renton Airport (9 m, Washington) |
8 |
|
| Oakland Intl. Airport (6 m, California) |
6 |
|
| Arlington Airport (42 m, Washington) |
6 |
|
| Palo Alto Airport (2 m, California) |
4 |
|
| Hayward Executive Airport (14 m, California) |
0 |
|
| Williams Lake Airport (942 m, British Columbia) |
6 |
1500-2000m |
| Buchanan Field Airport (7 m, California) |
4 |
|
| Moffett Federal Airfield (12 m, California) |
0 |
|
| Nut Tree Airport (34 m, California) |
8 |
|
| Travis Air Force Base (22 m, California) |
6 |
|
| San Jose Intl. Airport (17 m, California) |
6 |
|
| Chico Airport (73 m, California) |
6 |
|
| Monterey Regional Airport (77 m, California) |
4 |
|
| Livermore Airport (121 m, California) |
2 |
|
| Reid- Hillview Airport (41 m, California) |
4 |
|
| Davis Airport (21 m, California) |
6 |
|
| Watsonville Airport (48 m, California) |
8 |
|
| Sacramento Intl. Airport (7 m, California) |
6 |
|
| Crater Lake (1244 m, Oregon) |
6 |
|
| Chetwynd (609 m, British Columbia) |
8 |
|
| Oroville Airport (57 m, California) |
6 |
|
| Salinas Airport (26 m, California) |
0 |
|
| South County Arpt Of Santa Clara County (86 m, California) |
6 |
|
| Yuba (19 m, California) |
0 |
|
| Sacramento Executive Airport (8 m, California) |
0 |
|
| Beale Air Force Base (38 m, California) |
2 |
|
| Hollister Airport (70 m, California) |
0 |
|
| Sacramento McClellan Airport (23 m, California) |
4 |
|
| Lincoln Airport (37 m, California) |
0 |
|
| Stampede (1206 m, Washington) |
8 |
|
| Sacramento Mather Airport (29 m, California) |
2 |
|
| Stockton Metropolitan Airport (8 m, California) |
2 |
1000-1500m |
| Fort Simpson Airport (169 m, Northwest Territories) |
1 |
>2500m |
| Roberts Field (932 m, Oregon) |
6 |
|
| Columbia Gorge Regional Airport (73 m, Washington) |
8 |
|
| Auburn Airport (467 m, California) |
4 |
|
| Nevada (961 m, California) |
6 |
|
| Modesto (30 m, California) |
6 |
|
| Prineville Airport (991 m, Oregon) |
6 |
|
| Placerville Airport (788 m, California) |
6 |
|
| Fort St. John AP (695 m, British Columbia) |
7 |
600-1000m |
| Blue Canyon (1611 m, California) |
6 |
|
| Paso Robles Airport (255 m, California) |
0 |
|
| San Luis Obispo County Regional Airport (64 m, California) |
6 |
|
| Vandenberg Space Force Base (112 m, California) |
6 |
|
| Susanville Airport (1263 m, California) |
8 |
|
| Yakima Airport (325 m, Washington) |
6 |
600-1000m |
| Bowers Airport (527 m, Washington) |
8 |
|
| Merced Regional Airport (47 m, California) |
4 |
|
| Lompoc Airport (27 m, California) |
0 |
|
| Kamloops Airport (345 m, British Columbia) |
6 |
2000-2500m |
| Santa Maria Public Airport (73 m, California) |
4 |
600-1000m |
| Columbia Airport (646 m, California) |
6 |
|
| Lake County Airport (1441 m, Oregon) |
8 |
|
| Pangborn Memorial Airport (379 m, Washington) |
4 |
|
| Truckee Tahoe Airport (1798 m, California) |
8 |
|
| Madera Airport (77 m, California) |
0 |
|
| Santa Ynez Airport (205 m, California) |
4 |
|
| Lake Tahoe Airport (1909 m, California) |
6 |
|
| Sunnyside Muni (234 m, Washington) |
6 |
|
| Naval Air Station Lemoore (73 m, California) |
6 |
|
| Reno Stead Airport (1539 m, Nevada) |
0 |
|
| Santa Barbara Airport (3 m, California) |
4 |
|
| Reno (1341 m, Nevada) |
6 |
2000-2500m |
| Fresno Yosemite Intl. Airport (100 m, California) |
6 |
600-1000m |
| Carson City Airport (1432 m, Nevada) |
8 |
|
| Hanford Airport (75 m, California) |
0 |
|
| Penticton Airport (344 m, British Columbia) |
5 |
1000-1500m |
| Omak Airport (382 m, Washington) |
8 |
|
| Ephrata Airport (383 m, Washington) |
6 |
|
| Naval Outlying Landing Field San Nicola (174 m, California) |
2 |
|
| Visalia Airport (89 m, California) |
6 |
|
| Grant County Intl. Airport (364 m, Washington) |
2 |
|
North - South