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Alton / St. Louis Regional
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WeatherSky Cond. Temperature (ºF)Relative
PressurePrecipitation (in.)
AirDwpt6 hour altimeter
sea level
1 hr 3 hr6 hr
2004:35E 73.00 Fog/MistCLR4848 99%30.06NA
2004:15E 73.00 Fog/MistCLR4848 98%30.06NA
2003:55E 73.00 Fog/MistCLR4848 99%30.06NA
2003:35E 73.00 Fog/MistCLR4848 99%30.06NA
2003:15E 73.00 Fog/MistCLR4848 99%30.06NA
2002:55E 73.00 Fog/MistCLR4948 99%30.06NA
2002:35E 63.00 Fog/MistCLR4848 99%30.06NA
2002:15E 73.00 Fog/MistCLR4948 99%30.06NA
2001:55E 83.00 Fog/MistCLR4949 98%30.06NA
2001:35E 83.00 Fog/MistCLR4949 98%30.06NA
2001:15E 63.00 Fog/MistCLR4949 97%30.06NA
2000:55E 64.00 Fog/MistCLR4949 97%30.06NA
2000:35E 74.00 Fog/MistCLR5049 96%30.06NA
2000:15E 75.00 Fog/MistCLR5150 95%30.07NA
1923:55E 85.00 Fog/MistCLR5150 605195%30.07NA
1923:35E 85.00 Fog/MistCLR5149 95%30.07NA
1923:15SE 85.00 Fog/MistCLR5149 94%30.07NA
1922:55SE 87.00FairCLR5250 94%30.07NA
1922:35SE 97.00FairCLR5350 92%30.07NA
1922:15SE 87.00FairCLR5350 91%30.07NA
1921:45SE 910.00ClearSKC5450 88%30.08NA
1920:50SE 1210.00ClearSKC5452 94%30.07NA
1919:50SE 910.00ClearSKC5752 82%30.05NA
1918:52SE 810.00Partly CloudySCT2005752 82%30.04NA
1917:48SE 910.00Partly CloudySCT2506152 72%30.03NA
1916:50SE 1210.00Partly CloudySCT2506452 64%30.03NA
1914:57SE 710.00Partly CloudySCT2006452 64%30.05NA
1913:50E 710.00ClearSKC6652 60%30.05NA
1912:50E 310.00ClearSKC6352 68%30.06NA
1911:45S 610.00ClearSKC5752 82%30.08NA
1911:10SE 67.00Partly CloudySCT0045452 94%30.09NA
1910:45S 63.00 Fog/MistOVC0025050 100%30.09NA
1909:50Calm0.25 FogOVC0024848 100%30.08NA
1908:50Calm0.25 FogOVC0024545 100%30.07NA
1907:47Calm0.13 FogOVC0024343 100%30.05NA
1906:55Calm0.06 FogOVC0024343 100%30.04NA
1906:35Calm0.15 FogOVC0024242 100%30.02NA
1906:15E 30.25 FogOVC0024242 100%30.02NA
1905:55E 30.15 FogOVC0024242 4641100%30.01NA
1905:35Calm0.15 FogOVC0024242 100%30.00NA
1905:15Calm0.15 FogOVC0024242 100%29.99NA
1904:55Calm0.15 FogOVC0024242 100%29.98NA
1904:35Calm0.15 FogOVC0024242 100%29.97NA
1904:15SE 30.15 FogOVC0024242 100%29.96NA
1903:55SE 30.15 FogOVC0024343 100%29.96NA
1903:35Calm0.15 FogOVC0024343 100%29.95NA
1903:15SE 30.15 FogOVC0024343 100%29.95NA
1902:55Calm0.25 FogOVC0024545 100%29.96NA
1902:35Calm0.25 FogOVC0024545 100%29.95NA
1902:15S 50.50 FogOVC0024646 100%29.95NA
1901:55S 30.25 FogOVC0044444 100%29.95NA
1901:35S 60.25 FogOVC0044444 100%29.94NA
1901:15Calm0.25 FogOVC0044242 100%29.93NA
1900:55S 30.25 FogOVC0044242 100%29.92NA
1900:35Calm0.25 FogOVC0064242 99%29.92NA
1900:15SE 30.25 FogOVC0064444 99%29.91NA
1823:55Calm0.25 FogOVC0064444 5144100%29.91NA
1823:35SE 32.50 Fog/MistCLR4545 98%29.91NA
1823:15S 55.00 Fog/MistCLR4646 98%29.91NA
1822:55S 67.00FairCLR4746 98%29.91NA
1822:35S 67.00FairCLR4746 97%29.90NA
1822:15S 610.00FairCLR4746 97%29.90NA
1821:45S 510.00Partly CloudySCT2004846 94%29.89NA
1820:45S 510.00Partly CloudySCT2004848 100%29.88NA
1819:55S 510.00Partly CloudySCT2005048 94%29.86NA
1818:45S 710.00Partly CloudySCT2005048 94%29.84NA
1817:45S 710.00Partly CloudySCT2005248 88%29.83NA
1815:45S 1210.00Partly CloudySCT0955746 67%29.81NA
1814:45S 1210.00OvercastOVC1105746 67%29.80NA
1813:50W 1010.00OvercastOVC0905943 55%29.81NA
1812:45W 1010.00OvercastOVC0805943 55%29.81NA
1811:50W 910.00OvercastBKN080 OVC1106143 52%29.82NA
1810:45SW 910.00OvercastSCT080 OVC2505943 55%29.83NA
1809:48SW 1210.00OvercastSCT070 OVC2505941 51%29.84NA
1808:45SW 910.00OvercastBKN150 OVC2505541 59%29.84NA
1807:54SW 910.00OvercastBKN120 OVC2505439 58%29.83NA
1806:50SW 1210.00OvercastBKN120 OVC2505239 62%29.81NA
1806:35S 810.00Mostly CloudyBKN1205139 63%29.80NA
1806:15S 810.00Mostly CloudyBKN1205038 64%29.79NA
1805:55S 610.00Partly CloudySCT1204739 534773%29.79NA
1805:35Calm10.00Mostly CloudyBKN1205038 64%29.79NA
1805:15Calm10.00Mostly CloudyBKN1105038 63%29.78NA
1804:55Calm10.00Mostly CloudyBKN1104938 64%29.79NA
1804:35W 310.00Mostly CloudyBKN1105137 60%29.78NA
1804:15SW 310.00Partly CloudySCT1205137 59%29.78NA
1803:55SW 810.00Partly CloudySCT1205238 58%29.78NA
1803:35SW 710.00FairCLR5037 62%29.78NA
1803:15SW 610.00FairCLR4736 65%29.77NA
1802:55SW 810.00FairCLR5037 61%29.78NA
1802:35S 910.00FairCLR4937 65%29.79NA
1802:15S 710.00FairCLR5037 62%29.79NA
1801:55S 1010.00FairCLR5137 60%29.80NA
1801:35S 710.00FairCLR5137 59%29.79NA
1801:15S 810.00FairCLR5338 57%29.79NA
1800:55S 910.00FairCLR5238 58%29.78NA
1800:35S 810.00FairCLR5237 58%29.79NA
1800:15S 810.00FairCLR5237 57%29.78NA
1723:55S 710.00FairCLR5237 615257%29.78NA
1723:35S 710.00FairCLR5337 55%29.77NA
1723:15S 710.00FairCLR5237 57%29.77NA
1722:55S 710.00FairCLR5237 55%29.77NA
1722:35S 810.00FairCLR5337 53%29.77NA
1722:15S 910.00FairCLR5437 52%29.77NA
1721:45S 1010.00A Few CloudsFEW2005436 51%29.76NA
1720:45S 1010.00A Few CloudsFEW2005536 47%29.76NA
1719:45S 1210.00A Few CloudsFEW2005936 42%29.76NA
1718:45S 910.00A Few CloudsFEW2006132 34%29.76NA
1716:45S 1210.00A Few CloudsFEW2007032 25%29.73NA
1715:47SW 1210.00A Few CloudsFEW2007232 23%29.73NA
1714:45SW 1310.00A Few CloudsFEW2007032 25%29.74NA
1713:52S 13 G 1810.00A Few CloudsFEW2007032 25%29.76NA
1712:56SW 12 G 1710.00A Few CloudsFEW2006834 28%29.77NA
1711:45SW 12 G 1710.00ClearSKC6434 32%29.80NA
1710:50SW 910.00ClearSKC6134 36%29.81NA
1709:50SW 1210.00ClearSKC5932 36%29.83NA
1708:50SW 810.00ClearSKC5432 44%29.83NA
1707:50SW 810.00ClearSKC5032 50%29.82NA
1706:50SW 1010.00ClearSKC4530 57%29.80NA
1706:35SW 810.00FairCLR4530 57%29.79NA
1706:15SW 810.00FairCLR4429 56%29.79NA
1705:55S 510.00FairCLR4529 524455%29.79NA
1705:35Calm10.00FairCLR4529 54%29.80NA
1705:15SW 610.00FairCLR4629 52%29.79NA
1704:55SW 810.00FairCLR4629 52%29.79NA
WeatherSky Cond. AirDwptMax.Min.Relative
sea level
1 hr3 hr6 hr
6 hour
Temperature (ºF)PressurePrecipitation (in.)

National Weather Service
Southern Region Headquarters
Fort Worth, Texas
Last Modified: June 14, 2005
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