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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.
2419:45S 510.00Partly CloudySCT2508879 75%29.91NA
2418:45S 810.00Partly CloudySCT2509079 71%29.90NA
2415:45SE 710.00Partly CloudySCT047 SCT2509379 63%29.92NA
2413:50S 810.00Partly CloudyFEW044 SCT2509179 67%29.94NA
2412:49S 1210.00Partly CloudyFEW035 SCT2509179 67%29.96NA
2411:52S 910.00A Few CloudsFEW2509079 71%29.96NA
2410:48S 1310.00A Few CloudsFEW2508877 70%29.97NA
2409:47S 1210.00A Few CloudsFEW2508477 79%29.97NA
2408:52S 910.00Partly CloudySCT2508275 79%29.96NA
2407:51S 78.00Partly CloudySCT2007975 89%29.96NA
2406:50S 36.00 Fog/MistFEW100 SCT2007373 100%29.95NA
2406:35Calm4.00 Fog/MistCLR7473 98%29.95NA
2406:15Calm2.00 Fog/MistCLR7372 98%29.94NA
2405:55Calm3.00 Fog/MistCLR7373 97%29.93NA
2405:35Calm4.00 Fog/MistCLR7373 97%29.93NA
2405:15Calm3.00 Fog/MistCLR7373 98%29.93NA
2404:55Calm5.00 Fog/MistCLR7473 96%29.93NA
2404:35Calm5.00 Fog/MistCLR7474 97%29.93NA
2404:15SE 37.00FairCLR7473 96%29.93NA
2403:55SE 35.00 Fog/MistCLR7473 97%29.93NA
2403:35SE 35.00 Fog/MistCLR7373 97%29.93NA
2403:15E 54.00 Fog/MistCLR7473 96%29.93NA
2402:55Calm7.00FairCLR7674 93%29.93NA
2402:35Calm10.00FairCLR7774 92%29.94NA
2402:15Calm10.00FairCLR7774 91%29.94NA
2401:55Calm10.00FairCLR7574 94%29.94NA
2401:35SE 310.00FairCLR7574 95%29.94NA
2401:15SE 510.00FairCLR7573 96%29.95NA
2400:55E 310.00FairCLR7673 887593%29.96NA
2400:35E 310.00FairCLR7874 89%29.96NA
2400:15SE 510.00FairCLR7674 94%29.95NA
2323:55SE 57.00FairCLR7674 94%29.96NA
2323:35Calm10.00FairCLR7875 91%29.96NA
2323:15Calm10.00FairCLR7874 88%29.96NA
2322:55SE 610.00FairCLR7875 89%29.95NA
2322:35SE 510.00FairCLR8075 85%29.95NA
2322:15SE 310.00FairCLR7975 88%29.95NA
2321:45SE 310.00Partly CloudySCT2508175 84%29.95NA
2320:45SE 610.00Partly CloudySCT2508175 84%29.93NA
2318:45E 710.00Partly CloudySCT2508877 70%29.91NA
2316:45E 710.00Partly CloudySCT2509175 59%29.93NA
2313:59E 810.00Partly CloudySCT2509177 63%29.98NA
2311:45S 610.00A Few CloudsFEW0708675 70%30.00NA
2310:50S 710.00ClearSKC8473 70%30.01NA
2308:50SE 610.00ClearSKC7973 84%30.01NA
2307:50SE 610.00ClearSKC7573 94%30.01NA
2306:50E 610.00ClearSKC7270 94%30.01NA
2306:35Calm7.00FairCLR7070 99%30.00NA
2306:15Calm2.50 Fog/MistCLR7069 99%29.99NA
2305:55Calm1.00 Fog/MistVV0077069 98%29.99NA
2305:35Calm2.00 Fog/MistCLR7070 99%29.99NA
2305:15Calm7.00FairCLR7070 99%29.99NA
2304:55Calm1.00 Fog/MistVV0077070 99%29.99NA
2304:35Calm7.00FairCLR7070 98%29.99NA
2304:15Calm5.00 Fog/MistCLR7069 98%29.99NA
2303:55Calm7.00FairCLR7171 99%29.99NA
2303:35Calm7.00FairCLR7170 98%29.99NA
2303:15Calm10.00FairCLR7171 97%29.99NA
2302:55Calm10.00FairCLR7171 98%30.00NA
2302:35Calm2.00 Fog/MistCLR7170 98%30.00NA
2302:15Calm7.00FairCLR7271 98%30.00NA
2301:55Calm2.50 Fog/MistCLR7271 98%30.00NA
2301:35Calm7.00FairCLR7271 98%30.00NA
2301:15Calm5.00 Fog/MistCLR7372 98%30.01NA
2300:55Calm7.00FairCLR7272 817298%30.01NA
2300:35Calm7.00FairCLR7373 98%30.01NA
2300:15Calm10.00FairCLR7373 97%30.01NA
2223:55Calm10.00FairCLR7373 98%30.02NA
2223:35Calm5.00 Fog/MistCLR7373 98%30.02NA
2223:15Calm10.00FairCLR7473 98%30.02NA
2222:55Calm10.00FairCLR7473 96%30.03NA
2222:35Calm10.00FairCLR7573 95%30.03NA
2222:15Calm10.00FairCLR7473 95%30.04NA
2221:45Calm10.00Mostly CloudyBKN2007573 94%30.04NA
2219:45S 610.00Mostly CloudyBKN2007975 89%30.01NA
2218:59S 610.00Mostly CloudyBKN2008175 84%30.00NA
2217:45S 610.00Mostly CloudySCT065 BKN0758273 74%30.01NA
2215:45S 510.00Partly CloudySCT0208273 74%30.04NA
2213:45E 610.00OvercastSCT016 OVC1508170 70%30.05NA
2210:50W 610.00OvercastOVC1507270 94%30.06NA
2209:50SW 23 G 3210.00Overcast and BreezyOVC1107270 94%29.98NA
2208:50W 610.00OvercastOVC1007270 94%30.10NA
2207:50NE 610.00OvercastOVC0557268 88%30.11NA
2206:50N 710.00OvercastOVC0377268 88%30.11NA
2206:35N 510.00OvercastOVC0357168 90%30.11NA
2206:15N 8 G 1610.00 Light RainSCT012 SCT017 OVC0337268 89%30.10NA
2205:55N 9 G 1810.00OvercastSCT017 SCT026 OVC0337369 85%30.09NA
2205:35N 710.00OvercastOVC0237470 88%30.08NA
2205:15NE 310.00OvercastSCT021 BKN050 OVC0907471 89%30.06NA
2204:55Calm10.00Mostly CloudyBKN050 BKN0657571 87%30.05NA
2204:35N 510.00Mostly CloudySCT050 SCT065 BKN0707875 93%30.04NA
2204:15N 57.00Mostly CloudyBKN060 BKN0657877 95%30.04NA
2203:55Calm7.00Partly CloudySCT0607877 96%30.03NA
2203:35Calm10.00FairCLR7977 94%30.03NA
2203:15Calm10.00FairCLR7977 94%30.03NA
2202:55Calm7.00FairCLR7876 94%30.03NA
2202:35Calm10.00FairCLR7876 94%30.03NA
2202:15SE 310.00Partly CloudySCT0487977 93%30.03NA
2201:55S 510.00Partly CloudySCT0488077 90%30.03NA
2201:35S 510.00FairCLR8077 90%30.03NA
2201:15S 310.00FairCLR8177 90%30.03NA
2200:55S 610.00FairCLR8177 897890%30.03NA
2200:35S 710.00FairCLR8077 91%30.03NA
2200:15Calm10.00FairCLR7977 93%30.03NA
2123:55Calm10.00FairCLR7877 95%30.03NA
2123:35Calm10.00FairCLR8078 92%30.04NA
2123:15Calm10.00FairCLR8077 92%30.04NA
2122:55Calm7.00Partly CloudySCT0508078 94%30.04NA
2122:35Calm10.00FairCLR8278 88%30.04NA
2122:15Calm10.00Partly CloudySCT0508178 91%30.04NA
2121:50S 710.00Partly CloudySCT0508179 94%30.03NA
2120:52S 610.00ClearSKC8479 84%30.02NA
2119:59S 610.00Partly CloudySCT0608681 84%30.02NA
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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