| Alaska | Fairbanks | Poker Flat Research Range [roof] | 2000-08-26 | open | 147.432 W | 65.118 N | 509 m |
| Arizona | Flagstaff | Abyss Site at Grand Canyon National Park | 1996-03-14 | open | 112.184 W | 36.059 N | 2073 m |
| California | Davis | UC Davis Climate Station | 1994-06-29 | open | 121.777 W | 38.534 N | 18 m |
| California | Holtville | UC Desert Research and Extension Center | 1998-02-18 | open | 115.446 W | 32.806 N | -18 m |
| Colorado | Nunn | Central Plains Experimental Range | 1994-01-30 | open | 104.756 W | 40.806 N | 1641 m |
| Colorado | Steamboat Springs | DRI Storm Peak Lab [roof] | 1999-03-18 | open | 106.744 W | 40.455 N | 3220 m |
| Colorado | Lamar | Ultra-High Energy Cosmic Rays research [Auger Project] | 2003-12-17 | open | 102.616 W | 38.065 N | 1131 m |
| Florida | Homestead | Beard Research Center at Everglades National Park | 1998-05-05 | open | 80.68 W | 25.39 N | 0 m |
| Georgia | Griffin | University of Georgia-Griffin Campus-Bledsoe Research Farm | 1994-06-07 | open | 84.41 W | 33.181 N | 267 m |
| Hawaii | Waimea | NOAA Mauna Loa Observatory [roof] | 1997-11-11 | open | 155.576 W | 19.536 N | 3409 m |
| Illinois | Bondville | Bondville Environmental and Atmospheric Research Site | 1993-08-06 | open | 88.372 W | 40.053 N | 213 m |
| Indiana | West Lafayette | Agronomy Center for Research and Education | 2001-04-07 | open | 86.992 W | 40.475 N | 216 m |
| Louisiana | Baton Rouge | LSU Central Research Station | 1996-02-09 | open | 91.167 W | 30.364 N | 6 m |
| Maine | Presque Isle | Northern Maine Regional Office | 1995-10-27 | open | 68.039 W | 46.699 N | 155 m |
| Maryland | Queenstown | Wye Research and Education Center | 1996-01-30 | open | 76.151 W | 38.917 N | 5 m |
| Maryland | Beltsville | USDA Beltsville Agricultural Research Center - South Farm | 1999-05-30 | open | 76.95 W | 39.015 N | 64 m |
| Michigan | Pellston | University of Michigan Biological Station at Douglas Lake | 1994-08-02 | open | 84.68 W | 45.562 N | 230 m |
| Minnesota | Grand Rapids | North Central Research and Outreach Center | 1996-11-13 | open | 93.53 W | 47.184 N | 424 m |
| Mississippi | Starkville | Mississippi Agricultural and Forestry Experiment Station | 2000-09-13 | open | 88.782 W | 33.469 N | 88 m |
| Montana | Poplar | Fort Peck Assiniboine and Sioux Tribes | 1997-09-30 | open | 105.102 W | 48.308 N | 634 m |
| Nebraska | Mead | High Plains Regional Climate Center | 1996-05-16 | open | 96.492 W | 41.153 N | 355 m |
| New Mexico | Las Cruces | Jornada Experimental Range | 1994-09-22 | open | 106.74 W | 32.616 N | 1317 m |
| New York | Geneva | New York State Agricultural Experiment Station at Geneva | 1994-08-05 | open | 77.031 W | 42.877 N | 219 m |
| New Zealand | Alexandra | National Institute of Water and Atmospheric Research -Lauder | 2001-11-20 | open | 169.682 E | 45.039 S | 390 m |
| North Carolina | Raleigh | NCSU Air Quality Educational Unit | 2002-10-03 | open | 78.68 W | 35.728 N | 120 m |
| North Dakota | Fargo | NDSU Microclimatic Research Station | 2004-10-29 | open | 96.812 W | 46.897 N | 275 m |
| Ohio(2001) | Oxford | Ecology Research Center | 1993-10-06 | 2001-04-03 | 84.724 W | 39.531 N | 285 m |
| Oklahoma | Billings | US Department of Energy ARM / SGP / CART | 1999-02-17 | open | 97.485 W | 36.604 N | 317 m |
| Ontario | Toronto | Environment Canada building [roof] | 1998-02-11 | open | 79.468 W | 43.781 N | 210 m |
| Saskatchewan | Regina | Bratt's Lake Observatory [roof] | 1997-12-03 | open | 104.713 W | 50.204 N | 587 m |
| Texas | Panther Junction | Castolon Site at Big Bend National Park | 1996-12-28 | open | 103.513 W | 29.145 N | 677 m |
| Texas | Seguin | Texas Lutheran University [roof] | 2004-03-16 | open | 97.983 W | 29.571 N | 172 m |
| Texas | Houston | University of Houston - north Moody Tower [roof] | 2006-08-03 | open | 95.341 W | 29.718 N | 76 m |
| Texas | El Paso | UTEP Undergraduate Learning Center [roof] | 2006-04-19 | open | 106.506 W | 31.769 N | 1186 m |
| Utah | Logan | Utah Climate Center | 1995-12-15 | open | 111.892 W | 41.667 N | 1369 m |
| Vermont | Burlington | Proctor Maple Research Center | 1996-10-22 | open | 72.869 W | 44.528 N | 390 m |
| Washington | Pullman | Palouse Conservation Field Station | 1994-07-13 | open | 117.192 W | 46.76 N | 805 m |
| Wisconsin | Dancy | Lake Dubay | 1996-05-20 | open | 89.772 W | 44.708 N | 381 m |