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Alton / St. Louis Regional
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D
a
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Time
(cst)
Wind
(mph)
Vis.
(mi.)
WeatherSky Cond. Temperature (ºF)Relative
Humidity
PressurePrecipitation (in.)
AirDwpt6 hour altimeter
(in.)
sea level
(mb)
1 hr 3 hr6 hr
Max.Min.
2222:15NW 9 G 177.00 Light DrizzleBKN012 OVC0504037 86%29.72NA
2221:50N 141.00ClearSKC4137 87%29.71NA
2220:46N 141.00ClearSKC4337 81%29.70NA
2219:50N 161.00ClearSKC4537 76%29.68NA
2218:48N 161.00ClearSKC4537 76%29.63NA
2217:47N 161.00ClearSKC4641 82%29.56NA
2216:47N 161.00Mostly CloudyBKN0215043 76%29.55NA
2215:47N 146.00 Fog/MistOVC0155245 77%29.54NA
2214:48N 12 G 175.00 Fog/MistOVC0115046 88%29.52NA
2213:50N 12 G 175.00 Fog/MistOVC0095046 88%29.51NA
2212:45N 12 G 175.00 Fog/MistOVC0074845 87%29.50NA
2211:50N 12 G 175.00 Fog/MistOVC0074845 87%29.52NA
2210:55N 145.00 Fog/MistBKN007 OVC2504845 87%29.53NA
2209:55N 12 G 217.00OvercastSCT008 OVC2504643 87%29.54NA
2208:55N 127.00Mostly CloudySCT120 BKN2004541 87%29.54NA
2207:45N 127.00Mostly CloudySCT015 BKN0424543 93%29.53NA
2206:54N 1210.00OvercastOVC0154543 93%29.54NA
2206:35N 510.00OvercastOVC0154542 89%29.54NA
2206:15N 610.00OvercastOVC0154642 88%29.54NA
2205:55N 510.00OvercastOVC0134542 514389%29.53NA
2205:35N 610.00OvercastOVC0114542 87%29.53NA
2205:15N 610.00OvercastBKN011 OVC1204642 86%29.53NA
2204:55N 310.00Partly CloudySCT011 SCT1204642 83%29.53NA
2204:35N 610.00FairCLR4742 82%29.52NA
2204:15NW 310.00FairCLR4742 83%29.51NA
2203:55NW 510.00FairCLR4442 90%29.51NA
2203:35Calm10.00FairCLR4742 83%29.50NA
2203:15N 310.00FairCLR4642 88%29.50NA
2202:55Calm10.00FairCLR4442 94%29.50NA
2202:35Calm10.00FairCLR4442 92%29.50NA
2202:15Calm10.00FairCLR4542 90%29.50NA
2201:55Calm10.00FairCLR4643 87%29.50NA
2201:35Calm10.00FairCLR4943 80%29.50NA
2201:15E 310.00FairCLR4842 79%29.50NA
2200:55E 610.00FairCLR5042 74%29.51NA
2200:35Calm10.00FairCLR5043 75%29.50NA
2200:15N 310.00FairCLR5144 78%29.52NA
2123:55N 510.00Partly CloudySCT1205144 595077%29.53NA
2123:35N 610.00Partly CloudySCT090 SCT1205243 72%29.55NA
2123:15NW 310.00Partly CloudySCT090 SCT1205043 76%29.57NA
2122:55Calm10.00Partly CloudySCT1105242 70%29.57NA
2122:35Calm10.00Partly CloudySCT1205243 72%29.57NA
2122:15Calm10.00FairCLR5243 71%29.57NA
2121:45Calm10.00OvercastOVC2005243 72%29.57NA
2120:45Calm10.00OvercastOVC2005243 72%29.56NA
2119:45SE 310.00Partly CloudySCT1205246 82%29.55NA
2118:45Calm10.00Partly CloudySCT1205445 72%29.54NA
2117:45Calm10.00Partly CloudySCT2005746 67%29.53NA
2116:45SW 610.00Partly CloudySCT2006145 55%29.52NA
2115:45S 910.00Partly CloudySCT2006445 49%29.50NA
2114:50S 910.00Partly CloudySCT2006445 49%29.50NA
2113:50S 1210.00ClearSKC6446 52%29.51NA
2112:50S 1010.00ClearSKC4645 93%29.52NA
2111:50S 1210.00ClearSKC6148 63%29.55NA
2110:50SW 1210.00ClearSKC5948 68%29.57NA
2109:50SW 1310.00ClearSKC5548 77%29.58NA
2108:50S 1410.00Partly CloudySCT2005246 82%29.56NA
2107:55S 1410.00Partly CloudyFEW060 SCT2005045 82%29.55NA
2106:50S 1310.00Partly CloudySCT2005045 82%29.54NA
2106:35S 1010.00FairCLR5146 82%29.54NA
2106:15S 1010.00FairCLR5146 82%29.54NA
2105:55S 1010.00FairCLR5146 535182%29.54NA
2105:35S 1010.00FairCLR5146 83%29.54NA
2105:15S 1010.00FairCLR5146 82%29.54NA
2104:55S 1210.00FairCLR5246 82%29.54NA
2104:35S 1010.00FairCLR5247 84%29.54NA
2104:15S 1210.00FairCLR5147 85%29.55NA
2103:55S 1310.00FairCLR5147 86%29.55NA
2103:35S 1310.00FairCLR5147 86%29.57NA
2103:15S 1010.00FairCLR5147 88%29.57NA
2102:55S 810.00FairCLR5148 89%29.58NA
2102:35SE 810.00FairCLR5148 91%29.58NA
2102:15SE 810.00FairCLR5149 91%29.58NA
2101:55S 1010.00FairCLR5249 91%29.59NA
2101:35S 1210.00FairCLR5349 89%29.60NA
2101:15S 1410.00FairCLR5350 91%29.60NA
2100:55S 13 G 1710.00FairCLR5350 91%29.59NA
2100:35S 1010.00FairCLR5351 92%29.59NA
2100:15S 1010.00FairCLR5351 92%29.59NA
2023:55S 1310.00FairCLR5451 544791%29.60NA
2023:35S 1310.00FairCLR5351 92%29.60NA
2023:15S 1010.00FairCLR5351 93%29.60NA
2022:55SE 1310.00FairCLR5351 92%29.60NA
2022:35SE 1210.00FairCLR5351 91%29.60NA
2022:15SE 1210.00FairCLR5351 92%29.59NA
2021:45SE 13 G 1810.00ClearSKC5450 88%29.59NA
2020:45SE 67.00ClearSKC5050 100%29.60NA
2019:55SE 65.00 Fog/MistBKN0274848 100%29.60NA
2018:50E 67.00Partly CloudySCT0305048 94%29.59NA
2017:45SE 510.00OvercastSCT017 BKN027 OVC0335048 94%29.59NA
2016:55SE 810.00OvercastSCT017 OVC0305250 94%29.57NA
2015:48SE 810.00OvercastOVC0175248 88%29.58NA
2014:45S 1210.00OvercastOVC0175248 88%29.59NA
2013:45S 1210.00OvercastOVC0135046 88%29.59NA
2012:58S 1210.00OvercastOVC0155246 82%29.60NA
2011:50S 1010.00OvercastOVC0155048 94%29.63NA
2010:50S 1010.00OvercastBKN010 OVC0235050 100%29.66NA
2009:50S 97.00OvercastOVC0084848 100%29.68NA
2008:50SE 63.00 Fog/MistOVC0104646 100%29.67NA
2007:50Calm1.50 Fog/MistOVC0044646 100%29.65NA
2006:50S 62.00 Light DrizzleOVC0024646 100%29.65NA
2006:35S 50.75 Fog/MistOVC0024545 100%29.65NA
2006:15SE 50.25 FogOVC0024545 100%29.63NA
2005:55SE 30.50 FogOVC0024545 4644100%29.63NA
2005:35Calm0.25 FogOVC0024545 100%29.62NA
2005:15Calm0.50 FogOVC0024545 100%29.62NA
2004:55Calm0.25 FogOVC0024545 100%29.61NA
2004:35Calm0.25 FogOVC0024545 100%29.62NA
2004:15Calm0.25 FogOVC0024545 100%29.61NA
2003:55Calm0.25 FogOVC0024545 100%29.62NA
2003:35Calm0.50 FogOVC0024545 100%29.62NA
2003:15Calm0.50 FogOVC0024545 100%29.63NA
2002:55SW 60.50 FogOVC0024545 100%29.65NA
2002:35W 71.75 Fog/MistOVC0024444 100%29.65NA
2002:15Calm2.50 Fog/MistOVC0044444 100%29.63NA
2001:55SE 32.50 Fog/MistOVC0024444 100%29.62NA
2001:35Calm3.00 Fog/MistOVC0024444 100%29.62NA
2001:15Calm4.00 Fog/MistOVC0024444 100%29.62NA
2000:55Calm5.00 Fog/MistOVC0044444 100%29.62NA
2000:35W 65.00 Fog/MistOVC0044444 100%29.62NA
2000:15W 57.00OvercastOVC0024444 100%29.61NA
1923:55NE 65.00 RainBKN002 BKN015 OVC0654444 4544100%29.60NA0.060.40
1923:35E 53.00 RainSCT002 SCT015 OVC0654444 100%29.61NA0.05
1923:15E 33.00 Light RainOVC0024444 100%29.63NA0.01
1922:55SE 92.50 Light RainOVC0044444 100%29.65NA0.20
1922:35Calm1.50 Unknown PrecipOVC0044444 100%29.65NA0.16
D
a
t
e
Time
(cst)
Wind
(mph)
Vis.
(mi.)
WeatherSky Cond. AirDwptMax.Min.Relative
Humidity
altimeter
(in.)
sea level
(mb)
1 hr3 hr6 hr
6 hour
Temperature (ºF)PressurePrecipitation (in.)

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Last Modified: June 14, 2005
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