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Alton / St. Louis Regional
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D
a
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Time
(cdt)
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.
2403:55Calm10.00FairCLR5955 88%30.10NA
2403:35Calm10.00FairCLR5856 90%30.10NA
2403:15Calm10.00FairCLR5956 90%30.10NA
2402:55Calm10.00FairCLR5957 91%30.10NA
2402:35Calm10.00FairCLR6057 89%30.10NA
2402:15N 310.00FairCLR6157 86%30.11NA
2401:55Calm10.00FairCLR6157 87%30.11NA
2401:35Calm10.00FairCLR6158 91%30.11NA
2401:15Calm10.00FairCLR6259 92%30.11NA
2400:35Calm10.00FairCLR6459 86%30.13NA
2400:15Calm10.00FairCLR6460 84%30.13NA
2323:55NE 310.00FairCLR6560 84%30.13NA
2323:35NE 310.00FairCLR6661 84%30.13NA
2323:15NE 310.00FairCLR6661 86%30.12NA
2322:55Calm10.00FairCLR6662 87%30.12NA
2322:35Calm10.00Partly CloudySCT0506662 86%30.13NA
2322:15Calm10.00FairCLR6762 84%30.12NA
2321:45Calm10.00ClearSKC6863 83%30.12NA
2320:45NE 710.00ClearSKC7263 73%30.11NA
2319:55NE 910.00ClearSKC7564 69%30.09NA
2318:50N 1210.00A Few CloudsFEW0407764 65%30.07NA
2317:45N 1210.00Partly CloudySCT0407968 70%30.06NA
2316:55N 1210.00Mostly CloudyBKN0407968 70%30.06NA
2315:55N 1810.00Mostly CloudyBKN0448170 70%30.07NA
2314:55N 1810.00Mostly CloudyBKN0417972 79%30.07NA
2313:50N 810.00OvercastOVC0397972 79%30.07NA
2312:50NE 710.00OvercastOVC0337972 79%30.07NA
2311:45N 1510.00OvercastOVC0177773 89%30.09NA
2310:53N 155.00 Fog/MistOVC0117575 100%30.09NA
2309:50N 155.00 Fog/MistOVC0117979 100%30.05NA
2308:52N 127.00OvercastOVC0107977 94%30.05NA
2307:47N 125.00 Fog/MistSCT0107777 100%30.03NA
2306:50N 64.00 Fog/MistSCT1007777 100%30.00NA
2306:35NW 65.00 Fog/MistCLR7676 100%30.00NA
2306:15NW 35.00 Fog/MistCLR7676 100%29.99NA
2305:55NW 77.00Partly CloudySCT0187575 100%29.99NA
2305:35W 57.00Partly CloudySCT0187575 100%30.00NA
2305:15W 67.00FairCLR7676 100%30.01NA
2304:55Calm10.00FairCLR7675 97%30.01NA
2304:35Calm10.00Partly CloudySCT032 SCT0507775 95%30.00NA
2304:15W 310.00Mostly CloudyBKN036 BKN048 BKN0657775 94%30.00NA
2303:55Calm10.00Mostly CloudySCT038 BKN0607774 91%30.00NA
2303:35Calm10.00Partly CloudySCT040 SCT0607775 92%30.00NA
2303:15Calm10.00Partly CloudySCT0407874 89%30.00NA
2302:55Calm10.00Partly CloudySCT0387874 90%30.00NA
2302:35SW 310.00Partly CloudySCT045 SCT0657874 88%30.00NA
2302:15SW 310.00Mostly CloudySCT047 BKN0557974 85%30.01NA
2301:55SW 310.00Mostly CloudySCT040 SCT047 BKN0557974 84%30.01NA
2301:35SW 810.00Partly CloudySCT0408074 82%30.01NA
2301:15Calm10.00Mostly CloudyBKN0407973 83%30.03NA
2300:55S 510.00Mostly CloudyBKN0407973 857784%30.02NA
2300:35S 610.00Partly CloudySCT0387973 83%30.02NA
2300:15SE 610.00Partly CloudySCT0387973 83%30.01NA
2223:55S 610.00Mostly CloudyBKN040 BKN0467873 84%30.01NA
2223:35SE 710.00Mostly CloudySCT040 BKN0467873 86%30.01NA
2223:15SE 610.00OvercastBKN040 OVC0487873 86%30.02NA
2222:55SE 710.00Mostly CloudyBKN040 BKN0477873 86%30.03NA
2222:35SE 510.00Partly CloudySCT0447973 84%30.03NA
2222:15S 510.00FairCLR7973 82%30.03NA
2221:50SE 710.00Mostly CloudyBKN2007975 89%30.02NA
2220:50SE 710.00Mostly CloudyBKN2007975 89%30.02NA
2218:50SE 710.00Mostly CloudyBKN2008477 79%30.01NA
2217:50S 610.00Mostly CloudyBKN2008675 70%30.01NA
2216:45S 910.00Mostly CloudyBKN2009073 59%30.01NA
2215:47S 1210.00Mostly CloudyBKN2008875 66%30.01NA
2214:50S 1410.00OvercastOVC2008673 66%30.00NA
2213:50SW 1210.00OvercastOVC2008873 62%30.04NA
2212:50Vrbl 610.00OvercastOVC2008472 66%30.06NA
2211:48SW 510.00Mostly CloudyBKN2008472 66%30.10NA
2210:45SW 610.00ClearSKC8272 70%30.09NA
2209:45S 710.00ClearSKC7972 79%30.10NA
2208:45S 67.00ClearSKC7572 89%30.09NA
2207:45SE 37.00ClearSKC7070 100%30.09NA
2206:50Calm3.00 Fog/MistSKC6464 100%30.10NA
2206:35Calm2.00 Fog/MistCLR6464 100%30.10NA
2205:55Calm2.00 Fog/MistCLR6363 100%30.09NA
2205:35Calm3.00 Fog/MistCLR6363 100%30.09NA
2205:15E 35.00 Fog/MistCLR6464 100%30.09NA
2204:55Calm5.00 Fog/MistCLR6464 100%30.09NA
2204:35Calm5.00 Fog/MistCLR6464 100%30.08NA
2204:15Calm5.00 Fog/MistCLR6666 100%30.07NA
2203:55Calm4.00 Fog/MistCLR6464 100%30.08NA
2203:35SE 34.00 Fog/MistCLR6565 100%30.08NA
2203:15SE 37.00FairCLR6565 100%30.08NA
2202:55SE 37.00FairCLR6565 100%30.08NA
2202:35Calm7.00FairCLR6565 100%30.08NA
2202:15Calm7.00FairCLR6767 100%30.08NA
2201:55Calm7.00FairCLR6767 100%30.07NA
2201:35Calm10.00FairCLR6767 100%30.08NA
2201:15Calm10.00FairCLR6867 98%30.07NA
2200:55Calm10.00FairCLR6968 826896%30.07NA
2200:35SE 510.00FairCLR6868 100%30.06NA
2200:15SE 510.00FairCLR6969 99%30.06NA
2123:55SE 510.00FairCLR6969 99%30.07NA
2123:35SE 57.00FairCLR6868 100%30.06NA
2123:15SE 67.00FairCLR6868 99%30.06NA
2122:55E 510.00FairCLR7069 98%30.06NA
2122:35E 510.00FairCLR7069 98%30.06NA
2122:15E 510.00FairCLR7069 98%30.06NA
2121:50E 710.00ClearSKC7370 89%30.06NA
2120:50E 710.00ClearSKC7370 89%30.06NA
2119:50E 710.00ClearSKC7772 83%30.05NA
2118:50E 710.00ClearSKC8270 66%30.05NA
2117:50E 710.00ClearSKC8470 62%30.05NA
2116:45SE 710.00ClearSKC8668 55%30.05NA
2115:50SE 810.00A Few CloudsFEW0508466 55%30.06NA
2114:50SE 810.00Partly CloudySCT0458468 58%30.07NA
2113:50SE 1210.00Partly CloudySCT0408470 62%30.09NA
2112:50S 910.00A Few CloudsFEW0458270 66%30.10NA
2111:55Vrbl 510.00A Few CloudsFEW0408270 66%30.11NA
2110:45W 310.00FairCLR7970 74%30.11NA
2109:55SW 310.00FairCLR7768 74%30.11NA
2108:45Calm10.00FairCLR7370 89%30.12NA
2107:45Calm10.00FairCLR6866 94%30.11NA
2106:45Calm10.00FairCLR6363 100%30.09NA
2106:35Calm4.00 Fog/MistCLR6161 100%30.09NA
2106:15Calm4.00 Fog/MistCLR6161 100%30.09NA
2105:55Calm5.00 Fog/MistCLR6161 100%30.08NA
2105:35Calm7.00FairCLR6161 100%30.08NA
2105:15Calm5.00 Fog/MistCLR6161 100%30.07NA
2104:55Calm4.00 Fog/MistCLR6161 100%30.07NA
2104:35Calm7.00FairCLR6262 100%30.06NA
2104:15Calm5.00 Fog/MistCLR6161 100%30.06NA
D
a
t
e
Time
(cdt)
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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