724
ASUS43 KLOT 181901
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 PM CDT TUE AUG 18 2026
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR S TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-182000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 78 69 73 SW13G18 29.95F HX 80 TC 26
STERLING* CLOUDY 76 68 76 SW6 29.98F TC 24
SAVANNA* CLOUDY 76 67 71 SW3 29.96S TC 25
ILZ003-004-008-010-011-017-018-182000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 75 67 76 S7 29.98F TC 24
FREEPORT* CLOUDY 76 70 83 SW8 29.98F TC 24
ILZ005-006-012>014-019>023-182000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 78 65 63 W8 29.97F HX 80 TC 26
CHICAGO-MIDWAY CLOUDY 80 65 59 SW13 29.98F HX 82 TC 27
AURORA CLOUDY 77 68 73 SW9 29.98F TC 25
JOLIET* PTSUNNY 79 67 68 SW8 29.99F HX 81 TC 26
WAUKEGAN PTSUNNY 79 66 64 W13 29.95F HX 81 TC 26
DUPAGE AIRPORT CLOUDY 77 67 71 SW13 29.98F TC 25
WHEELING PTSUNNY 79 64 60 W9 29.98F HX 81 TC 26
LANSING* PTSUNNY 80 64 57 SW15 30.01S HX 82 TC 27
NORTHERLY ISL* N/A 79 61 53 W9 N/A HX 80 TC 26
LMZ740>746-182000-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 78 74 210/ 8/ 12 1014.3F 1
WAUKEGAN HARBOR 78 74 240/ 12/ 16 1015.3F 1
WILMETTE BUOY 77 260/ 10/ 12 1018.3S 1
CHICAGO BUOY 78 73 1014.1F 1
NORTHERLY ISL 80 220/ 8/ 13 N/A
CALUMET HARBOR 79 220/ 6/ 12 1015.6
MICH CITY BUOY 76 74 220/ 2/ 4 N/A 1/ 3
ST. JOSEPH BUOY 74 74 220/ 8/ 10 1016.7S 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-182000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 79 68 69 SW8 30.03S HX 81 TC 26
MACOMB* PTSUNNY 78 72 81 SW9 30.03S HX 80 TC 26
ILZ028>032-037-038-041>044-048-051>054-059>061-182000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTSUNNY 78 66 66 SW12 30.04F HX 80 TC 26
DECATUR MOSUNNY 81 64 56 SW10 30.04F HX 82 TC 27
PEORIA CLOUDY 78 67 68 SW9 30.02S HX 80 TC 26
LINCOLN* PTSUNNY 82 68 63 SW3 30.02F HX 84 TC 28
SPRINGFIELD PTSUNNY 83 65 54 SW7 30.02F HX 85 TC 28
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-182000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 80 67 64 SW8 30.05F HX 82 TC 27
MATTOON MOSUNNY 80 64 58 CALM 30.06S HX 82 TC 27
ILZ079-100>102-182000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 84 66 54 S8 30.03F HX 86 TC 29
BELLEVILLE SUNNY 85 71 62 S7 30.02F HX 91 TC 30
CAHOKIA* MOSUNNY 85 67 54 W6 30.03F HX 87 TC 29
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE MOSUNNY 84 66 54 VRB5 30.05F HX 86 TC 29
MT. VERNON SUNNY 86 66 51 S8 30.05F HX 88 TC 30
CENTRALIA* SUNNY 84 67 54 CALM 30.06S HX 87 TC 29
ILZ067-068-072-073-078-083-087-091-182000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 84 61 45 W9 30.05F HX 84 TC 29
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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