390
ASUS43 KLOT 181001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 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.
ILZ001-002-007-009-015-016-024-181100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 64 62 93 CALM 30.03S TC 18
STERLING* PTCLDY 62 62 100 CALM 30.04S TC 17
SAVANNA* MOCLDY 62 60 94 SE3 30.03S TC 17
ILZ003-004-008-010-011-017-018-181100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 61 60 97 SE5 30.03F TC 16
FREEPORT* PTCLDY 64 62 94 SW6 30.04F TC 18
DE KALB* PTCLDY 65 62 89 W7 30.05R TC 18
ILZ005-006-012>014-019>023-181100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 67 62 84 SW8 30.01R TC 19
CHICAGO-MIDWAY PTCLDY 66 62 87 SW6 30.02R TC 19
AURORA PTCLDY 60 60 100 CALM 30.03R FOG TC 16
JOLIET* PTCLDY 63 63 100 CALM 30.04R TC 17
WAUKEGAN CLEAR 63 61 93 W6 29.99S TC 17
DUPAGE AIRPORT PTCLDY 64 62 93 SW3 30.02R TC 18
WHEELING PTCLDY 66 61 84 CALM 30.03R TC 19
LANSING* PTCLDY 61 59 95 CALM 30.03S TC 16
NORTHERLY ISL* N/A 68 61 78 SW6 N/A TC 20
LMZ740>746-181100-
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 69 74 240/ 12/ 16 1015.2S 1/ 3
WAUKEGAN HARBOR 69 74 260/ 10/ 14 1016.2S 1
WILMETTE BUOY 71 250/ 12/ 16 1018.8R 1/ 2
CHICAGO BUOY 71 73 1015.1S 1
HARRISON CRIB 73 240/ 9/ 11 N/A
NORTHERLY ISL 69 230/ 4/ 9 N/A
CALUMET HARBOR 67 210/ 3/ 6 1016.4
MICHIGAN CITY 67 200/ 7/ 8 1015.0F
MICH CITY BUOY 71 74 230/ 12/ 14 N/A 1/ 3
ST. JOSEPH BUOY 73 74 220/ 12/ 14 1016.9R 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-181100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOCLDY 65 63 93 S5 30.06S TC 18
GALESBURG* MOCLDY 64 64 100 SW3 30.06S TC 18
MACOMB* MOCLDY 62 62 100 CALM 30.08S TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-181100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON PTCLDY 64 64 100 SW5 30.07S TC 18
DECATUR MOCLDY 63 61 93 CALM 30.07S TC 17
PEORIA MOCLDY 66 64 93 CALM 30.05S TC 19
LACON* MOCLDY 64 62 94 CALM 30.04S TC 18
LINCOLN* MOCLDY 63 63 100 CALM 30.06S TC 17
SPRINGFIELD PTCLDY 64 62 93 SW3 30.06F TC 18
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 60 60 100 SW3 30.06S TC 16
MATTOON PTCLDY 64 61 90 W5 30.06S TC 18
ILZ079-100>102-181100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON FOG 64 63 97 CALM 30.07F VSB 1 TC 18
CAHOKIA* CLEAR 65 65 100 CALM 30.06S TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 64 64 100 CALM 30.06R TC 18
MARION CLEAR 66 65 99 CALM 30.07R TC 19
MT. VERNON CLEAR 62 61 96 CALM 30.07R FOG TC 17
CENTRALIA* FOG 64 63 98 CALM 30.07S VSB 1/4 TC 18
SALEM* FOG 65 65 100 MISG 30.07R VSB 1/2 TC 18
ILZ067-068-072-073-078-083-087-091-181100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 65 64 97 NW6 30.05R TC 18
FLORA* CLEAR 64 N/A N/A NW3 30.06S TC 18
FAIRFIELD* CLEAR 63 62 99 CALM 30.05S FOG TC 17
HARRISBURG* CLEAR 64 64 100 CALM 30.06S TC 18
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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