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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.
3006:55Calm5.00 Fog/MistSCT0806664 94%30.04NA
3006:35Calm7.00Mostly CloudyBKN0806565 98%30.03NA
3006:15Calm5.00 Fog/MistSCT060 BKN0806564 97%30.03NA
3005:55Calm10.00OvercastOVC0606765 96%30.02NA
3005:35Calm10.00Mostly CloudyBKN0606665 97%30.02NA
3005:15Calm7.00Partly CloudySCT0606565 99%30.02NA
3004:55Calm5.00 Fog/MistCLR6464 98%30.01NA
3004:35SE 35.00 Fog/MistCLR6463 97%30.01NA
3004:15Calm7.00FairCLR6666 98%30.00NA
3003:55SE 37.00Partly CloudySCT0606665 96%30.01NA
3003:35Calm7.00Partly CloudySCT060 SCT0706665 97%30.01NA
3003:15SE 310.00Mostly CloudySCT055 BKN0706766 96%30.01NA
3002:55S 310.00Partly CloudySCT055 SCT0706766 96%30.01NA
3002:35Calm10.00Partly CloudySCT055 SCT0906867 96%30.01NA
3002:15Calm7.00Mostly CloudySCT055 BKN090 BKN1106867 96%30.01NA
3001:55Calm10.00OvercastSCT070 BKN080 OVC1106867 96%30.02NA
3001:35Calm10.00OvercastSCT055 BKN070 OVC0806967 95%30.03NA
3001:15Calm7.00OvercastBKN050 OVC0556967 95%30.03NA
3000:55Calm10.00OvercastOVC0506967 766794%30.03NA
3000:35Calm10.00OvercastOVC0506967 94%30.03NA
3000:15E 310.00OvercastOVC0506967 94%30.03NA
2923:55Calm10.00OvercastOVC0506867 95%30.03NA
2923:35Calm7.00Mostly CloudyBKN050 BKN1106766 97%30.03NA
2923:15Calm7.00Mostly CloudyBKN050 BKN1106766 95%30.02NA
2922:55Calm7.00Mostly CloudySCT055 BKN1106867 95%30.03NA
2922:35Calm10.00Partly CloudySCT1206867 94%30.03NA
2922:15Calm7.00Partly CloudySCT1206967 93%30.03NA
2921:50Calm10.00Partly CloudySCT0707050 50%30.03NA
2920:50Calm10.00OvercastOVC0707268 88%30.01NA
2919:50Calm10.00Mostly CloudyBKN0807368 83%30.01NA
2918:50S 610.00Partly CloudySCT0907768 74%29.99NA
2917:50S 610.00Partly CloudySCT0907968 70%30.00NA
2916:45SE 710.00OvercastOVC2007968 70%29.99NA
2911:45S 610.00OvercastOVC2007766 69%30.03NA
2910:52S 1010.00OvercastOVC2007566 74%30.03NA
2909:50S 810.00OvercastOVC2007266 83%30.03NA
2908:56S 910.00OvercastOVC2007266 83%30.03NA
2907:53S 510.00Mostly CloudyBKN2006864 88%30.03NA
2906:50S 510.00Mostly CloudyBKN2006664 94%30.03NA
2906:35SE 510.00FairCLR6564 95%30.03NA
2906:15SE 610.00 Thunderstorm in VicinityCLR6564 94%30.02NA
2905:55SE 510.00FairCLR6564 94%30.02NA
2905:35Calm10.00FairCLR6564 94%30.01NA
2905:15SE 310.00FairCLR6564 94%30.01NA
2904:55SE 610.00FairCLR6564 94%30.01NA
2904:35SE 510.00FairCLR6564 94%30.01NA
2904:15SE 710.00FairCLR6564 95%30.02NA
2903:55Calm10.00FairCLR6564 95%30.03NA
2903:35Calm10.00FairCLR6664 94%30.03NA
2903:15SE 310.00FairCLR6664 92%30.03NA
2902:55Calm10.00Partly CloudySCT1106764 91%30.03NA
2902:35E 310.00 Light DrizzleSCT070 SCT0906664 92%30.03NA
2902:15Calm10.00FairCLR6763 88%30.04NA
2901:55Calm10.00FairCLR6863 84%30.04NA
2901:35SE 310.00FairCLR6863 85%30.04NA
2901:15Calm10.00FairCLR6963 81%30.03NA
2900:55SE 310.00FairCLR6863 736784%30.03NA
2900:35SE 610.00FairCLR6863 85%30.03NA
2900:15SE 510.00FairCLR6862 82%30.03NA
2823:55SE 610.00FairCLR6962 77%30.03NA
2823:35SE 610.00FairCLR7062 76%30.02NA
2823:15SE 610.00FairCLR6962 77%30.02NA
2822:55SE 610.00FairCLR6762 84%30.03NA
2822:35SE 610.00FairCLR6962 79%30.03NA
2822:15SE 610.00FairCLR6962 78%30.03NA
2821:45SE 510.00OvercastOVC2506863 83%30.03NA
2819:45SE 310.00OvercastOVC2507063 78%30.01NA
2816:48S 810.00OvercastOVC2507761 57%30.04NA
2815:59S 810.00OvercastOVC2507961 54%30.05NA
2814:52S 810.00OvercastOVC2507961 54%30.07NA
2813:59S 810.00OvercastOVC2507761 57%30.08NA
2812:52S 1210.00OvercastOVC2507559 57%30.10NA
2811:50SE 810.00OvercastOVC2507559 57%30.12NA
2810:50SE 810.00ClearSKC7361 65%30.13NA
2809:50SE 610.00ClearSKC7063 78%30.13NA
2808:50SE 610.00ClearSKC6461 88%30.13NA
2807:50SE 67.00ClearSKC6159 94%30.13NA
2806:50E 64.00Mostly CloudyBKN2005555 100%30.12NA
2806:35Calm4.00 Fog/MistCLR5655 99%30.13NA
2806:15Calm4.00 Fog/MistCLR5656 99%30.13NA
2805:55Calm5.00 Fog/MistCLR5656 98%30.11NA
2805:35Calm5.00 Fog/MistCLR5756 99%30.11NA
2805:15Calm5.00 Fog/MistCLR5656 99%30.11NA
2804:55Calm7.00FairCLR5757 98%30.10NA
2804:35E 37.00FairCLR5756 99%30.10NA
2804:15Calm7.00FairCLR5656 98%30.11NA
2803:55Calm7.00FairCLR5655 99%30.11NA
2803:35Calm5.00 Fog/MistCLR5656 99%30.11NA
2803:15Calm5.00 Fog/MistCLR5656 99%30.11NA
2802:55Calm5.00 Fog/MistCLR5756 99%30.10NA
2802:35Calm7.00FairCLR5656 99%30.10NA
2802:15Calm7.00FairCLR5857 99%30.10NA
2801:55Calm7.00FairCLR5857 97%30.10NA
2801:35E 37.00FairCLR5858 99%30.10NA
2801:15E 37.00FairCLR5757 99%30.10NA
2800:55E 37.00FairCLR5858 715898%30.10NA
2800:35Calm7.00FairCLR5857 98%30.10NA
2800:15Calm7.00FairCLR5958 97%30.10NA
2723:55Calm10.00FairCLR5958 97%30.10NA
2723:35Calm10.00FairCLR5958 97%30.10NA
2723:15Calm10.00FairCLR6059 96%30.10NA
2722:55E 510.00FairCLR5958 97%30.09NA
2722:35Calm10.00FairCLR6058 96%30.10NA
2722:15Calm10.00FairCLR6159 94%30.10NA
2721:45Calm10.00Mostly CloudyBKN2506159 94%30.09NA
2719:45Calm10.00Mostly CloudyBKN2506459 83%30.08NA
2716:50Vrbl 610.00OvercastOVC2507557 54%30.12NA
2715:47Vrbl 610.00Mostly CloudyBKN2507759 54%30.12NA
2714:52N 610.00Mostly CloudyBKN2507557 54%30.13NA
2713:52N 610.00Mostly CloudyBKN2507559 57%30.15NA
2712:58NW 610.00Mostly CloudyBKN2507359 61%30.19NA
2711:55Vrbl 610.00Mostly CloudyBKN2507059 69%30.19NA
2710:50E 610.00ClearSKC6857 69%30.17NA
2709:50E 610.00ClearSKC6659 78%30.17NA
2708:50E 610.00ClearSKC6157 88%30.18NA
2707:50E 610.00ClearSKC5555 100%30.19NA
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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