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Alton / St. Louis Regional
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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.
1008:50NW 16 G 2510.00OvercastOVC0142319 86%30.17NA
1007:50W 15 G 2310.00OvercastOVC0162319 86%30.17NA
1006:50NW 23 G 3210.00Overcast and BreezyOVC0162319 86%30.14NA
1005:45W 2010.00OvercastOVC0182520 262582%30.12NA
1005:25W 22 G 2510.00Overcast and BreezyOVC0182520 82%30.11NA
1005:05W 18 G 2910.00OvercastOVC0182520 82%30.11NA
1004:45NW 18 G 2610.00OvercastOVC0182520 81%30.10NA
1004:25NW 20 G 3310.00OvercastOVC0182620 81%30.09NA
1004:05W 18 G 2810.00OvercastOVC0182620 81%30.09NA
1003:45W 20 G 2410.00OvercastOVC0182621 81%30.08NA
1003:25W 20 G 2510.00OvercastOVC0182621 82%30.07NA
1003:05W 17 G 3010.00OvercastOVC0182621 82%30.06NA
1002:45NW 18 G 2510.00OvercastOVC0182621 81%30.06NA
1002:25W 25 G 3110.00Overcast and BreezyOVC0182621 81%30.05NA
1002:05NW 18 G 3010.00OvercastOVC0182621 81%30.05NA
1001:45NW 21 G 2510.00Overcast and BreezyOVC0202621 81%30.04NA
1001:25W 21 G 2610.00Overcast and BreezyOVC0202621 81%30.04NA
1001:05W 21 G 2810.00Overcast and BreezyOVC0202621 81%30.03NA
1000:45W 23 G 2810.00Overcast and BreezyOVC0202621 81%30.02NA
1000:25W 22 G 2910.00Overcast and BreezyOVC0202621 82%30.02NA
1000:05W 21 G 2510.00Overcast and BreezyOVC0202621 81%30.02NA
0923:45W 17 G 2510.00OvercastOVC0242520 251381%30.02NA
0923:25W 20 G 2410.00OvercastBKN024 OVC0422520 83%30.01NA
0923:05W 18 G 2610.00 Light SnowSCT024 SCT028 OVC0402420 83%30.01NA
0922:45W 20 G 2610.00OvercastOVC0402419 84%30.00NA
0922:25W 1710.00 Light SnowOVC0362319 85%30.00NA
0922:05W 1410.00 Light SnowSCT015 SCT033 OVC0382218 85%30.00NA
0921:50W 21 G 297.00 Light Snow and BreezySCT015 OVC0382118 86%29.99NA
0921:45W 157.00 Light SnowSCT015 SCT019 OVC0382117 85%29.99NA
0921:25W 16 G 2410.00OvercastOVC0171916 86%29.98NA
0921:05W 1410.00OvercastOVC0191915 87%29.99NA
0920:45W 177.00 Light SnowOVC0211814 87%29.98NA
0920:25W 184.00 Light SnowBKN021 OVC0281713 85%29.98NA
0920:05W 18 G 255.00 Light SnowOVC0211712 82%29.98NA
0919:50W 18 G 3010.00 Light SnowOVC0211610 79%29.99NA
0919:45W 207.00 Light SnowBKN021 OVC0261611 82%29.99NA
0919:25W 20 G 287.00 Light SnowBKN023 BKN034 OVC0431510 80%29.99NA
0919:05W 20 G 2610.00 Light SnowBKN023 OVC027159 77%29.99NA
0918:50W 20 G 2910.00Mostly CloudyBKN022 BKN029149 79%30.00NA
0917:50W 25 G 3110.00Mostly Cloudy and BreezySCT028 BKN037 BKN060145 67%29.99NA
0916:50W 25 G 3510.00A Few Clouds and BreezyFEW030143 62%29.98NA
0915:50W 23 G 3110.00Partly Cloudy and BreezySCT029 SCT034143 62%29.96NA
0914:55W 21 G 3010.00Partly Cloudy and BreezySCT031 SCT044165 62%29.95NA
0913:50W 25 G 3510.00Mostly Cloudy and BreezyBKN030165 62%29.94NA
0912:50W 21 G 3010.00Partly Cloudy and BreezySCT028167 67%29.95NA
0911:50W 16 G 2110.00A Few CloudsFEW025145 67%29.96NA
0910:50W 1610.00ClearSKC145 67%29.98NA
0909:52W 1710.00ClearSKC145 67%29.92NA
0908:50W 16 G 2110.00Mostly CloudySCT009 BKN037127 79%29.98NA
0907:50NW 177.00OvercastOVC0311410 85%29.97NA
0906:50W 156.00 Fog/MistOVC0201410 85%29.97NA
0905:45W 165.00 Light SnowOVC0141714 281788%29.96NA0.01
0905:25W 16 G 217.00 Light SnowOVC0121815 86%29.96NA
0905:05W 15 G 202.00 Light SnowOVC0122119 93%29.95NA
0904:45W 155.00 Light SnowOVC0102119 93%29.94NA
0904:25W 155.00 Light SnowOVC0062220 95%29.93NA
0904:05SW 143.00 Light SnowBKN006 OVC0112626 98%29.93NA
0903:45Calm1.75 Light SnowOVC0092828 100%29.93NA0.01
0903:25NW 31.75 Light SnowOVC0092827 99%29.93NA
0903:05W 32.00 Light SnowOVC0132827 99%29.93NA
0902:45Calm1.50 Light SnowOVC0132827 99%29.93NA
0902:25Calm2.00 Light SnowOVC0132827 99%29.93NA
0902:05Calm2.00 Light SnowSCT007 SCT010 OVC0152727 100%29.94NA
0901:45Calm1.25 Light SnowBKN007 OVC0132727 100%29.95NA
0901:25Calm1.75 Light SnowSCT012 BKN031 OVC0402727 100%29.96NA
0901:05Calm2.00 Light SnowOVC0102828 100%29.96NA
0900:45Calm1.50 Light SnowOVC0102827 99%29.97NA
0900:25Calm1.75 Light SnowBKN010 OVC0152827 99%29.98NA
0900:05Calm2.00 Light SnowOVC0122827 99%29.98NA
0823:45Calm2.00 Light SnowBKN009 OVC0152828 302899%29.99NA0.010.01
0823:25SE 31.75 Light SnowOVC0072828 98%30.00NA
0823:05E 61.00 SnowOVC0052828 98%30.00NA
0822:45E 61.50 Light SnowBKN005 OVC0142828 97%30.00NA
0822:25SE 32.50 Light SnowSCT010 BKN014 OVC0212828 97%30.01NA
0822:05SE 52.00 Light SnowSCT005 OVC0102828 98%30.01NA
0821:50Calm1.00 Light SnowBKN008 OVC0142828 100%30.01NA
0821:45Calm2.00 Light SnowBKN008 OVC0142828 98%30.01NA
0821:25E 32.00 Light SnowBKN008 OVC0162928 96%30.01NA
0821:05E 62.50 Light SnowSCT010 BKN014 OVC0202928 96%30.01NA
0820:50E 81.00 Light SnowSCT005 OVC0102828 100%30.01NA
0820:45E 71.75 Light SnowSCT005 OVC0102928 96%30.01NA
0820:25E 52.00 Light SnowOVC0102928 95%30.01NA
0820:05E 72.00 Light SnowOVC0142927 93%30.01NA
0819:50E 122.00 Light SnowBKN010 OVC0242827 93%30.01NA
0819:45E 83.00 Light SnowSCT010 BKN016 OVC0222927 92%30.01NA
0819:25E 84.00 Light SnowSCT024 BKN032 OVC0602927 92%30.01NA
0819:05E 67.00 Light SnowSCT013 BKN055 OVC0752927 92%30.01NA
0817:50E 127.00OvercastBKN035 OVC0853027 86%30.02NA
0816:50E 125.00 Light SnowBKN018 OVC0303025 80%30.03NA
0815:50E 127.00OvercastOVC0503025 80%30.04NA
0814:50E 1210.00OvercastOVC0503025 80%30.03NA
0813:50E 1210.00OvercastSCT015 OVC0503025 80%30.05NA
0812:50SE 610.00OvercastSCT015 OVC0503025 80%30.07NA
0811:48SE 1410.00OvercastSCT041 OVC0503025 80%30.09NA
0810:50E 124.00 Light SnowBKN011 BKN022 OVC0553027 86%30.11NA
0809:50E 142.50OvercastSCT009 OVC0172825 86%30.12NA
0808:55E 95.00 Light SnowSCT010 BKN029 OVC0362825 86%30.13NA
0807:50E 910.00OvercastBKN033 OVC0432723 86%30.13NA
0806:50E 67.00OvercastSCT023 BKN031 OVC0652723 86%30.13NA
0805:45S 610.00OvercastSCT039 OVC0702823 282782%30.14NA
0805:25SE 610.00OvercastSCT039 BKN065 OVC0702822 79%30.13NA
0805:05SE 610.00OvercastSCT065 OVC0702822 79%30.13NA
0804:45SE 810.00OvercastOVC0652822 81%30.12NA
0804:25SE 610.00OvercastOVC0652822 81%30.12NA
0804:05SE 610.00OvercastSCT050 OVC0752724 86%30.10NA
0803:45SE 510.00OvercastSCT050 BKN070 OVC1202723 84%30.10NA
0803:25SE 610.00OvercastSCT060 BKN080 OVC0952723 84%30.09NA
0803:05SE 310.00OvercastSCT070 OVC0802824 86%30.09NA
0802:45SE 710.00OvercastBKN090 OVC1002823 83%30.08NA
0802:25E 310.00OvercastOVC0902824 86%30.09NA
0802:05E 310.00Mostly CloudyBKN1002824 85%30.09NA
0801:45E 610.00Mostly CloudySCT070 SCT090 BKN1102824 85%30.09NA
0801:25E 610.00OvercastOVC0702824 86%30.10NA
0801:05E 610.00OvercastBKN070 OVC0902824 86%30.10NA
0800:45E 310.00OvercastSCT065 OVC1002824 86%30.10NA
0800:25E 310.00OvercastBKN065 BKN075 OVC1102824 86%30.11NA
0800:05E 510.00OvercastBKN070 OVC0902824 86%30.11NA
0723:45E 310.00OvercastBKN100 OVC1202724 292787%30.11NA
0723:25E 310.00Mostly CloudySCT100 BKN1202824 86%30.12NA
0723:05E 310.00OvercastOVC1002824 88%30.11NA
0722:45Calm10.00Mostly CloudyBKN1102824 88%30.12NA
0722:25E 310.00Mostly CloudyBKN1202824 86%30.12NA
0722:05Calm10.00Mostly CloudySCT095 BKN1202724 87%30.12NA
0721:47E 610.00Mostly CloudySCT065 BKN085 BKN1002823 80%30.13NA
0721:45Calm10.00Mostly CloudySCT065 BKN085 BKN1002824 84%30.13NA
0721:25Calm10.00OvercastOVC0802823 81%30.14NA
0721:05E 310.00OvercastOVC0902824 83%30.14NA
0720:50SE 910.00OvercastOVC1002823 80%30.13NA
0720:45E 510.00OvercastOVC1002824 83%30.13NA
0720:25E 310.00OvercastOVC1002824 83%30.13NA
0720:05E 510.00Mostly CloudySCT080 BKN100 BKN1202823 81%30.13NA
0719:50E 710.00Mostly CloudySCT080 SCT100 BKN1202823 80%30.13NA
0719:45E 310.00Mostly CloudySCT080 SCT100 BKN1202824 83%30.13NA
0719:25E 310.00Mostly CloudyBKN0902823 82%30.12NA
0719:05NE 310.00FairCLR2823 81%30.11NA
0718:50NE 910.00ClearSKC2823 80%30.12NA
0717:50E 610.00Partly CloudySCT1203023 75%30.11NA
0716:50E 910.00Partly CloudyFEW026 SCT2003023 75%30.11NA
0715:50E 710.00Partly CloudySCT0263221 64%30.11NA
0714:50E 910.00Partly CloudySCT0303221 64%30.11NA
0713:50NE 1010.00Partly CloudySCT0303223 69%30.11NA
0712:50Vrbl 610.00Partly CloudySCT0303223 69%30.14NA
0711:50Calm10.00Partly CloudySCT0303021 69%30.17NA
0710:50Calm10.00Partly CloudyFEW030 SCT2002821 74%30.21NA
0709:50Calm10.00A Few CloudsFEW2002719 74%30.21NA
D
a
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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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