520
ASUS43 KLOT 182156
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 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.
ILZ001-002-007-009-015-016-024-182300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 80 69 69 SW15 29.91F HX 83 TC 27
ILZ003-004-008-010-011-017-018-182300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 77 68 73 S15 29.93F TC 25
ILZ005-006-012>014-019>023-182300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 77 66 68 SW8 29.93S TC 25
CHICAGO-MIDWAY NOT AVBL
AURORA CLOUDY 74 68 81 S8 29.95S TC 23
WAUKEGAN LGT RAIN 70 66 87 SW8 29.91F TC 21
DUPAGE AIRPORT CLOUDY 75 67 76 SW13 29.94F TC 24
WHEELING CLOUDY 77 67 71 SW8 29.94F TC 25
ROMEOVILLE* CLOUDY 75 73 94 SW6G12 29.96F TC 24
NORTHERLY ISL* N/A 78 63 59 S8 N/A HX 80 TC 26
LMZ740>746-182300-
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 74 74 220/ 16/ 21 1013.0F 1
WAUKEGAN HARBOR 77 74 250/ 12/ 16 1014.3R 1
WILMETTE BUOY 77 260/ 12/ 17 1017.0S 1/ 2
CHICAGO BUOY 77 73 1012.8F 1/ 2
NORTHERLY ISL 78 240/ 8/ 13 N/A
CALUMET HARBOR 78 200/ 9/ 15 1014.2
MICH CITY BUOY 76 74 220/ 14/ 17 N/A 1/ 2
ST. JOSEPH BUOY 76 74 220/ 6/ 8 1014.8F 1/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-182300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ILZ028>032-037-038-041>044-048-051>054-059>061-182300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PEORIA NOT AVBL
SPRINGFIELD PTSUNNY 82 67 60 SW9 29.98F HX 84 TC 28
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-182300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ILZ079-100>102-182300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 84 66 54 VRB3 30.00F HX 86 TC 29
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 88 66 48 CALM 29.99F HX 90 TC 31
ILZ067-068-072-073-078-083-087-091-182300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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