034
ASUS43 KLOT 181501
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 AM 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.
ILZ001-002-007-009-015-016-024-181600-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 75 67 76 SW6 30.00F TC 24
STERLING* PTSUNNY 75 68 78 VRB6 30.02F TC 24
SAVANNA* MOSUNNY 73 64 73 SW8 30.00F TC 23
ILZ003-004-008-010-011-017-018-181600-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 74 66 76 S8 30.01S TC 23
FREEPORT* PTSUNNY 73 67 81 SW10 30.01F TC 23
ILZ005-006-012>014-019>023-181600-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 73 63 70 SW7 29.99F TC 23
CHICAGO-MIDWAY PTSUNNY 76 63 64 W9 30.00F TC 24
AURORA PTSUNNY 74 66 76 SW9 30.02F TC 23
JOLIET* MOSUNNY 76 66 70 W7 30.03S TC 25
WAUKEGAN PTSUNNY 71 65 81 SW6 29.98F TC 22
DUPAGE AIRPORT PTSUNNY 73 64 73 SW8 30.01F TC 23
WHEELING PTSUNNY 74 63 68 SW7 30.01F TC 23
LANSING* PTSUNNY 74 63 69 NW9 30.02S TC 23
NORTHERLY ISL* N/A 75 61 61 SW3 N/A TC 24
LMZ740>746-181600-
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 72 74 220/ 8/ 10 1015.2F 0
WAUKEGAN HARBOR 73 74 230/ 8/ 10 1016.1F 0
WILMETTE BUOY 73 270/ 8/ 12 1018.7F 1
CHICAGO BUOY 74 73 1014.8F 1
HARRISON CRIB 74 270/ 8/ 10 N/A
NORTHERLY ISL 74 270/ 6/ 8 N/A
CALUMET HARBOR 73 200/ 3/ 5 1016.1
MICHIGAN CITY 72 210/ 7/ 8 1014.8F
MICH CITY BUOY 72 74 240/ 10/ 12 N/A 2/ 3
ST. JOSEPH BUOY 73 74 240/ 8/ 12 1017.0S 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-181600-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTSUNNY 72 67 84 S8 30.05R TC 22
MACOMB* PTSUNNY 72 70 95 SW3 30.07R TC 22
ILZ028>032-037-038-041>044-048-051>054-059>061-181600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTSUNNY 75 65 70 W7 30.06F TC 24
DECATUR MOSUNNY 76 65 68 W7 30.08R TC 24
PEORIA PTSUNNY 74 65 73 SW7 30.04S TC 23
LINCOLN* PTSUNNY 76 67 73 SW3 30.05F TC 25
SPRINGFIELD PTSUNNY 76 66 71 S5 30.05F TC 24
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOSUNNY 75 67 76 W7 30.07R TC 24
MATTOON MOSUNNY 76 62 62 CALM 30.06S TC 24
ILZ079-100>102-181600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 77 66 69 S3 30.07S TC 25
BELLEVILLE MOSUNNY 80 72 77 S3 30.06R HX 83 TC 26
CAHOKIA* MOSUNNY 79 68 69 CALM 30.07R HX 81 TC 26
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181600-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 79 68 69 MISG 30.07F HX 81 TC 26
MT. VERNON SUNNY 79 65 62 CALM 30.08S HX 81 TC 26
CENTRALIA* MOSUNNY 79 65 63 CALM 30.07F HX 81 TC 26
ILZ067-068-072-073-078-083-087-091-181600-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 78 64 61 VRB5 30.07S HX 80 TC 26
FAIRFIELD* SUNNY 76 62 61 CALM 30.07F TC 25
HARRISBURG* SUNNY 79 64 61 CALM 30.09S HX 80 TC 26
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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