346
ASUS43 KLOT 182303
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 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.
ILZ001-002-007-009-015-016-024-190000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTSUNNY 81 70 69 SW12 29.90F HX 84 TC 27
STERLING* PTSUNNY 78 69 73 SW9 29.92S HX 80 TC 26
SAVANNA* MOSUNNY 79 69 69 SW6 29.91S HX 82 TC 26
ILZ003-004-008-010-011-017-018-190000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 76 68 76 S14 29.93S TC 24
FREEPORT* PTSUNNY 77 71 81 SW12G20 29.94R TC 25
ILZ005-006-012>014-019>023-190000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 77 66 68 SW10 29.92F TC 25
CHICAGO-MIDWAY PTSUNNY 76 66 71 SW14 29.92F TC 24
AURORA MOSUNNY 76 69 79 S8 29.93F TC 24
JOLIET* PTSUNNY 78 71 78 S7 29.94F HX 80 TC 26
WAUKEGAN CLOUDY 71 69 93 S6 29.90F TC 22
DUPAGE AIRPORT MOSUNNY 74 66 76 SW8 29.92F TC 23
KANKAKEE* CLOUDY 79 67 67 SW9 29.96F HX 81 TC 26
WHEELING PTSUNNY 77 66 68 SW7 29.93F TC 25
ROMEOVILLE* MOSUNNY 77 70 78 S8 29.94F TC 25
LANSING* PTSUNNY 74 66 75 SW8 29.95F TC 24
NORTHERLY ISL* N/A 76 63 64 S10 N/A TC 24
LMZ740>746-190000-
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 73 74 160/ 17/ 23 1010.0F 1/ 2
WAUKEGAN HARBOR 74 74 340/ 2/ 2 1013.8F 0
WILMETTE BUOY 76 220/ 8/ 12 1016.4F 1
CHICAGO BUOY 77 73 1012.5F 1/ 2
NORTHERLY ISL 77 170/ 6/ 12 N/A
CALUMET HARBOR 76 190/ 10/ 12 1013.8F
MICH CITY BUOY 76 74 220/ 10/ 16 N/A 2/ 3
ST. JOSEPH BUOY 76 74 220/ 14/ 16 1014.8S 1/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-190000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOSUNNY 81 69 67 SW9 29.96F HX 84 TC 27
MACOMB* SUNNY 80 72 77 SW9 29.97F HX 84 TC 27
JACKSONVILLE* PTSUNNY 81 68 63 SW7 29.96F HX 84 TC 27
ILZ028>032-037-038-041>044-048-051>054-059>061-190000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTSUNNY 80 69 70 SW10 29.95F HX 82 TC 27
BLOOMINGTON PTSUNNY 80 68 66 SW15 29.97F HX 83 TC 27
DECATUR PTSUNNY 81 66 60 SW10 29.98F HX 83 TC 27
PEORIA MOSUNNY 81 68 64 SW10 29.94S HX 84 TC 27
LACON* MOSUNNY 80 67 64 SW8 29.93S HX 82 TC 27
LINCOLN* PTSUNNY 83 68 61 SW7 29.97S HX 85 TC 28
SPRINGFIELD PTSUNNY 82 66 58 SW7 29.97F HX 84 TC 28
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-190000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 79 68 69 SW6 29.98F HX 81 TC 26
MATTOON MOSUNNY 79 67 66 S7 29.99F HX 81 TC 26
PARIS* MOSUNNY 78 66 66 SW6 30.00F HX 80 TC 26
ILZ079-100>102-190000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON SUNNY 84 70 61 NW5 30.00S HX 88 TC 29
BELLEVILLE PTSUNNY 84 73 68 S3 29.98R HX 90 TC 29
CAHOKIA* PTSUNNY 86 70 58 SE5 29.98S HX 90 TC 30
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-190000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 88 66 48 VRB6 29.99S HX 90 TC 31
CAIRO* SUNNY 87 69 53 CALM 30.00R HX 91 TC 31
MT. VERNON MOSUNNY 86 68 54 S5 30.01S HX 89 TC 30
CENTRALIA* PTSUNNY 86 68 54 CALM 30.00F HX 89 TC 30
SALEM* N/A 84 69 59 MISG 30.01S HX 88 TC 29
METROPOLIS* SUNNY 87 64 47 CALM 30.00S HX 88 TC 30
ILZ067-068-072-073-078-083-087-091-190000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 85 63 47 CALM 30.00S HX 86 TC 29
FLORA* PTSUNNY 82 68 61 CALM 30.01S HX 85 TC 28
FAIRFIELD* MOSUNNY 82 66 57 CALM 30.01R HX 85 TC 28
HARRISBURG* SUNNY 86 67 53 W3 30.01R HX 88 TC 30
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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