Below are sky quality measurements for various locations in Missouri.  The data was extracted from the "World Atlas 2015" located at http://lightpollutionmap.info. 

The following information will better help you understand the data columns:   (Enjoy this fun mapMissouri Dark Skies Map)

Column Contents
Type State = Missouri State Parks
SQM Mag/arc sec2 (the higher the number, the darker the location.  IDA has a minimum 21.25 measurement to qualify for designation as a "Dark Sky Park").  Other criteria must be met.
Bortle Another method of measuring sky brightness. Refer to https://darkskymissouri.org/learn/bortle-scale

SEARCHABLE DATABASE OF SKY QUALITY MEASUREMENTS BY LOCATION IN MISSOURI:

Click on any column header to sort your list. You can enter text in the search box to filter your view.

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Region Name SQM Bright Limiting Abright Ratio Bortle Elev
Southeast Current River State Park 21.96 6.600 0.18 7 0.039 2 286
Southeast Echo Bluff State Park 21.96 6.600 0.18 7 0.038 2 218
Southeast Roger Pryor Pioneer Backcountr 21.96 6.600 0.18 7 0.038 2 293
Lakes Bryant Creek SP 21.93 6.600 0.18 12 0.068 2 265
Southeast Montauk State Park 21.91 6.600 0.19 15 0.087 2 377
Southeast Sam A. Baker State Park 21.91 6.600 0.19 14 0.082 2 171
Southeast Johnson's Shut-Ins State Park 21.89 6.600 0.19 18 0.106 2 263
Southeast Dillard Mill State Historic Si 21.88 6.600 0.19 20 0.118 3 305
Southeast Grand Gulf State Park 21.88 6.600 0.19 20 0.114 3 258
Northeast Mark Twain Birthplace SHS 21.87 6.600 0.19 21 0.124 3 181
Northeast Mark Twain SP 21.87 6.600 0.19 21 0.124 3 181
Northeast Locust Creek Covered Bridge SH 21.86 6.600 0.20 24 0.142 3 214
Northeast Union Covered Bridge SHS 21.85 6.600 0.20 26 0.149 3 224
Central Annie and Abel Van Meter State 21.84 6.600 0.20 27 0.160 3 235
Northeast Battle of Athens SHS 21.84 6.600 0.20 27 0.158 3 204
Northeast Pershing SP 21.83 6.500 0.20 28 0.166 3 219
Lakes Stockton SP 21.83 6.500 0.20 28 0.166 3 265
Southeast Taum Sauk Mountain State Park 21.83 6.500 0.21 36 0.208 3 541
Central Boone's Lick State Historic Si 21.81 6.500 0.20 32 0.189 3 209
Central Sappington Cemetery State Hist 21.80 6.500 0.21 34 0.199 3 225
Southeast Big Oak Tree State Park 21.78 6.500 0.21 39 0.228 3 90
Southeast Towosahgy State Historic Site 21.78 6.500 0.21 38 0.221 3 90
Southeast Lake Wappapello State Park 21.75 6.500 0.22 44 0.254 3 117
Lakes Prairie SP 21.75 6.500 0.22 45 0.263 3 274
Central Arrow Rock State Historic Site 21.74 6.500 0.22 45 0.265 3 219
Kansas City Big Lake SP 21.74 6.500 0.22 47 0.272 3 270
Southeast Onondaga Cave State Park 21.70 6.500 0.23 54 0.317 3 265
Kansas City Battle of Island Mound State H 21.69 6.500 0.23 56 0.327 3 267
St. Louis Hawn State Park 21.64 6.500 0.24 67 0.391 4 206
Northeast Iliniwek Village SHS 21.63 6.400 0.24 70 0.409 4 157
Southeast Elephant Rocks State Park 21.62 6.400 0.24 71 0.414 4 389
Lakes Harry S Truman SP 21.62 6.400 0.24 72 0.422 4 215
Lakes Roaring River SP 21.62 6.400 0.24 72 0.419 4 423
Lakes Pomme de Terre SP 21.61 6.400 0.25 74 0.430 4 281
Northeast Graham Cave SP 21.60 6.400 0.25 77 0.450 4 226
Lakes Big Sugar Creek SP 21.58 6.400 0.25 80 0.470 4 357
Northeast Gen. John J. Pershing Boyhood 21.53 6.400 0.26 92 0.539 4 248
Lakes Bennett Spring SP 21.52 6.400 0.27 95 0.556 4 344
Lakes Lake of the Ozarks SP 21.52 6.400 0.26 96 0.560 4 231
Kansas City Wallace SP 21.51 6.400 0.27 97 0.567 4 298
Southeast Morris State Park 21.46 6.400 0.28 111 0.648 4 89
Southeast Bollinger Mill State Historic 21.45 6.400 0.28 112 0.655 4 121
Central Katy Trail, McKittrick Trailhe 21.44 6.400 0.29 115 0.671 4 159
Northeast Crowder SP 21.42 6.300 0.29 120 0.703 4 234
Northeast Long Branch SP 21.41 6.300 0.29 122 0.715 4 254
St. Louis Washington State Park 21.39 6.300 0.30 130 0.760 4 256
St. Louis Meramec State Park 21.38 6.300 0.30 132 0.772 4 193
Central Bothwell Lodge State Historic 21.35 6.300 0.31 140 0.629 4 257
Southeast Trail of Tears State Park 21.30 6.300 0.33 154 0.901 4 164
Northeast Wakonda SP 21.27 6.300 0.34 163 0.956 4 162
Northeast Thousand Hills SP 21.26 6.300 0.34 169 0.986 4 274
Kansas City Lewis and Clark SP 21.21 6.200 0.36 185 1.080 4 252
Northeast Cuivre River SP 21.20 6.200 0.36 186 1.090 4 212
St. Louis St. Francois State Park 21.18 6.200 0.37 195 1.140 4 281
Lakes Ha Ha Tonka SP 21.13 6.200 0.38 210 1.230 4 320
Kansas City Confederate Memorial SHS 21.07 6.200 0.40 232 1.350 4 244
Central Finger Lakes State Park 21.00 6.100 0.43 257 1.500 4 224
St. Louis Robertsville State Park 20.91 6.100 0.47 297 1.740 4 174
Kansas City Watkins Woolen Mill SP and SHS 20.88 6.000 0.48 307 1.800 4 277
Central Clark's Hill/Norton State Hist 20.84 6.000 0.50 325 1.900 4 172
St. Louis St. Joe State Park 20.80 6.000 0.52 346 2.020 4 314
Kansas City Weston Bend SP 20.77 6.000 0.53 360 2.100 4 285
Southeast Hunter-Dawson State Historic S 20.69 5.900 0.57 399 2.330 4 93
Kansas City Battle of Lexington State Hist 20.61 5.900 0.61 443 2.590 4 256
Lakes Table Rock SP 20.54 5.800 0.66 488 2.850 4 281
Central Rock Bridge Memorial State Par 20.26 5.700 0.85 676 3.950 5 233
Kansas City Knob Noster SP 20.19 5.600 0.73 733 4.280 5 249
St. Louis Dr. Edmund A. Babler Memorial 19.99 5.500 1.09 917 5.360 5 203
St. Louis Route 66 State Park 19.94 5.500 1.15 975 5.700 5 219
Kansas City Katy Trail SP - Rock Island Sp 19.67 5.300 1.46 1290 7.560 5 190
St. Louis Castlewood State Park 19.39 5.100 1.90 1730 10.100 6 161
St. Louis Edward "Ted" and Pat Jones-Con 19.21 4.900 2.24 2070 12.100 6 128
Central Missouri State Museum 19.13 4.900 2.40 2220 13.000 6 180
Central Jewell Cemetery State Historic 18.95 4.700 2.85 2680 15.700 6 225
Kansas City Thomas Hart Benton Home and St 17.67 3.700 9.24 9070 53.000 8 290