591
ASUS43 KLOT 190411
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 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.
ILZ001-002-007-009-015-016-024-190500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 72 68 87 SW6 29.92F TC 22
STERLING* CLOUDY 70 70 100 CALM 29.94F TC 21
SAVANNA* PTCLDY 67 66 94 CALM 29.93F TC 20
ILZ003-004-008-010-011-017-018-190500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 66 64 93 CALM 29.94F TC 19
FREEPORT* CLEAR 65 64 96 S3 29.95F TC 18
ROCHELLE* PTCLDY 66 65 94 CALM 29.94S TC 19
DE KALB* MOCLDY 65 65 100 S3 29.94F TC 19
PERU* PTCLDY 72 70 94 SW3 29.93F TC 22
ILZ005-006-012>014-019>023-190500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 67 66 97 SW6 29.91F TC 19
CHICAGO-MIDWAY LGT RAIN 69 66 90 SW8 29.93R TC 21
AURORA LGT RAIN 68 67 96 CALM 29.93S TC 20
JOLIET* CLOUDY 74 72 91 CALM 29.93S TC 24
WAUKEGAN CLOUDY 64 64 100 W5 29.90F TC 18
DUPAGE AIRPORT PTCLDY 67 65 93 S3 29.92F TC 19
KANKAKEE* CLEAR 71 69 93 SW7 29.95S TC 22
WHEELING MOCLDY 68 66 93 W3 29.92F TC 20
ROMEOVILLE* MOCLDY 73 72 94 CALM 29.94S TC 23
LANSING* LGT RAIN 72 67 85 W3 29.93F TC 22
NORTHERLY ISL* N/A 69 65 86 SW6 N/A TC 21
LMZ740>746-190500-
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 67 74 N/A 0
WAUKEGAN HARBOR 67 74 N/A 1
WILMETTE BUOY 70 1015.2F 1/ 3
CHICAGO BUOY 71 73 1012.4 1/ 3
NORTHERLY ISL 71 10/ 12 N/A
CALUMET HARBOR 74 240/ 2/ 4 1013.3
MICH CITY BUOY 69 74 350/ 16/ 19 N/A 1
ST. JOSEPH BUOY 67 74 260/ 6/ 10 1014.4S 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-190500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOCLDY 72 69 90 E3 29.94F TC 22
GALESBURG* PTCLDY 69 69 100 CALM 29.96F TC 21
MACOMB* CLEAR 68 68 100 CALM 29.97F TC 20
JACKSONVILLE* CLEAR 68 68 100 CALM 29.95F TC 20
ILZ028>032-037-038-041>044-048-051>054-059>061-190500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 72 70 93 W3 29.96S TC 22
BLOOMINGTON CLEAR 72 69 90 W7 29.98R TC 22
DECATUR CLEAR 72 68 87 SW5 29.96S TC 22
PEORIA PTCLDY 72 69 90 CALM 29.95S TC 22
LACON* CLEAR 71 67 88 S3 29.94S TC 21
LINCOLN* CLEAR 70 70 100 CALM 29.97R TC 21
SPRINGFIELD CLEAR 70 68 93 CALM 29.95S TC 21
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-190500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 70 68 93 SW3 29.97R TC 21
RANTOUL* PTCLDY 69 68 97 CALM 29.97S TC 21
MATTOON CLEAR 72 68 87 S5 29.96F TC 22
PARIS* CLEAR 67 66 98 S5 29.97S TC 19
ILZ079-100>102-190500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 71 69 95 CALM 29.96S TC 22
BELLEVILLE CLEAR 76 74 96 CALM 29.94R TC 24
CAHOKIA* CLEAR 73 71 93 CALM 29.94S TC 23
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-190500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLEAR 72 70 92 CALM 29.98F TC 22
EFFINGHAM* CLEAR 69 69 99 CALM 29.98F TC 21
MARION CLEAR 73 72 97 SW3 29.99S TC 23
MT. VERNON CLEAR 74 68 81 CALM 29.98S TC 23
CENTRALIA* CLEAR 71 69 95 CALM 29.97S TC 21
SALEM* N/A 73 70 89 MISG 29.97S TC 23
METROPOLIS* CLEAR 70 69 97 CALM 29.99F TC 21
ILZ067-068-072-073-078-083-087-091-190500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 72 68 87 CALM 29.97F TC 22
FLORA* CLEAR 70 N/A N/A CALM 29.97F TC 21
FAIRFIELD* CLEAR 70 67 91 CALM 29.97F TC 21
HARRISBURG* CLEAR 71 70 97 CALM 29.98F TC 21
ROBINSON* CLEAR 68 68 100 SE2 29.97S TC 20
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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