446
ASUS43 KLOT 180810
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 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.
ILZ001-002-007-009-015-016-024-180900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 65 62 90 SW3 30.02F TC 18
STERLING* PTCLDY 62 62 100 CALM 30.03F TC 17
SAVANNA* PTCLDY 62 60 94 SE5 30.02S TC 17
ILZ003-004-008-010-011-017-018-180900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLEAR 62 61 96 CALM 30.03S TC 17
FREEPORT* PTCLDY 66 64 96 W6 30.04S TC 19
ROCHELLE* PTCLDY 59 57 94 S3 30.03S TC 15
DE KALB* PTCLDY 65 61 86 W7 30.03F TC 19
PERU* N/A 64 64 100 SW3 30.03F FOG TC 18
ILZ005-006-012>014-019>023-180900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 68 62 81 SW7 30.00F TC 20
CHICAGO-MIDWAY PTCLDY 67 60 78 SW6 30.01S TC 19
AURORA PTCLDY 63 62 97 CALM 30.02S TC 17
JOLIET* PTCLDY 64 64 100 CALM 30.03S FOG TC 18
WAUKEGAN CLEAR 63 61 93 SW7 29.99F TC 17
DUPAGE AIRPORT PTCLDY 65 62 90 S3 30.01F TC 18
KANKAKEE* PTCLDY 64 63 94 SW5 30.04S TC 18
WHEELING CLEAR 66 62 87 S3 30.02S TC 19
ROMEOVILLE* PTCLDY 64 64 100 S5 30.03S TC 18
LANSING* PTCLDY 62 59 90 CALM 30.03S TC 17
NORTHERLY ISL* N/A 70 58 65 W6 N/A TC 21
LMZ740>746-180900-
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 70 74 220/ 10/ 14 1015.1 1/ 3
WAUKEGAN HARBOR 70 74 240/ 10/ 12 1016.0 1/ 3
WILMETTE BUOY 71 240/ 12/ 16 1018.7F 1/ 3
CHICAGO BUOY 73 73 1015.1 1
HARRISON CRIB 74 240/ 14/ 15 N/A
NORTHERLY ISL 70 230/ 4/ 8 N/A
CALUMET HARBOR 68 220/ 4/ 6 1016.4
MICH CITY BUOY 72 74 230/ 10/ 14 N/A 1/ 2
ST. JOSEPH BUOY 73 74 240/ 10/ 14 1017.0F 1/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-180900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 65 64 97 S3 30.07R TC 18
GALESBURG* MOCLDY 63 63 100 S3 30.06S TC 17
MACOMB* MOCLDY 62 62 100 SW3 30.08S TC 17
JACKSONVILLE* PTCLDY 63 63 100 CALM 30.06S TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-180900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 62 62 100 CALM 30.05R TC 17
BLOOMINGTON PTCLDY 63 62 97 SW5 30.07R TC 17
DECATUR PTCLDY 65 63 93 CALM 30.06S TC 18
PEORIA MOCLDY 66 65 96 CALM 30.05R TC 19
LACON* PTCLDY 65 63 94 CALM 30.03S TC 18
LINCOLN* PTCLDY 64 64 100 CALM 30.06S TC 18
SPRINGFIELD CLEAR 63 63 100 CALM 30.06S TC 17
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-180900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 61 60 97 CALM 30.05S TC 16
RANTOUL* CLEAR 62 62 99 W3 30.05S TC 17
MATTOON CLEAR 64 62 93 CALM 30.04F TC 18
PARIS* CLEAR 63 62 97 CALM 30.05S TC 17
ILZ079-100>102-180900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON N/A 65 65 97 CALM 30.06S FOG TC 19
BELLEVILLE CLEAR 68 67 97 CALM 30.04R TC 20
CAHOKIA* CLEAR 66 66 100 CALM 30.05S TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 66 66 100 CALM 30.06S TC 19
EFFINGHAM* CLEAR 63 63 100 CALM 30.07S TC 17
MARION CLEAR 65 65 99 CALM 30.06S TC 18
MT. VERNON CLEAR 64 64 100 CALM 30.06S FOG TC 18
CENTRALIA* CLEAR 65 64 98 CALM 30.06S TC 18
SALEM* N/A 65 65 100 MISG 30.06S FOG TC 19
METROPOLIS* CLEAR 64 63 97 CALM 30.05F TC 18
ILZ067-068-072-073-078-083-087-091-180900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE N/A 66 64 93 W5 30.04R TC 19
FLORA* CLEAR 66 64 94 CALM 30.05S TC 19
FAIRFIELD* CLEAR 64 63 99 CALM 30.05S TC 18
HARRISBURG* CLEAR 65 65 100 CALM 30.05F TC 19
ROBINSON* CLEAR 64 64 100 W5 30.03F TC 18
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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