541
ASUS43 KLOT 212156
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 PM CDT THU MAY 21 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.
ILZ001-002-007-009-015-016-024-212300-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOSUNNY 70 45 40 E13 30.14F TC 21
ILZ003-004-008-010-011-017-018-212300-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTSUNNY 62 43 49 NE10G17 30.23F TC 17
PERU* CLOUDY 70 46 43 E14G20 30.17F TC 21
ILZ005-006-012>014-019>023-212300-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 57 41 55 N15G26 30.23F TC 14
CHICAGO-MIDWAY NOT AVBL
AURORA MOSUNNY 63 45 51 E17G24 30.20F TC 17
WAUKEGAN MOSUNNY 51 38 60 N13G23 30.26F TC 11
DUPAGE AIRPORT SUNNY 60 44 55 NE14G23 30.22F TC 16
WHEELING MOSUNNY 55 42 61 NE12G18 30.25F TC 13
MORRIS* CLOUDY 66 45 45 E15G21 30.18S TC 19
ROMEOVILLE* MOSUNNY 63 45 51 NE17G23 30.21F TC 17
NORTHERLY ISL* N/A 54 43 66 N15 N/A TC 12
LMZ740>746-212300-
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 50 1024.3F 3/ 4
WAUKEGAN HARBOR 47 49 340/ 17/ 23 1023.2F 3/ 4
WILMETTE BUOY 47 60/ 21/ 27 1024.7F 3/ 5
CHICAGO BUOY 51 55 20/ 19/ 25 1022.3F 3/ 5
HARRISON CRIB 50 10/ 20/ 22 N/A
NORTHERLY ISL 55 350/ 12/ 15 N/A
CALUMET HARBOR 350/ 14/ 17 1023.7
BURNS HARBOR 53 50/ 8/ 10 1023.7F
MICHIGAN CITY 51 40/ 18/ 19 1022.5F
ST. JOSEPH BUOY 52 10/ 14/ 17 1023.9F 3/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-212300-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ILZ028>032-037-038-041>044-048-051>054-059>061-212300-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PEORIA NOT AVBL
SPRINGFIELD PTSUNNY 71 45 39 E16 30.11S TC 22
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-212300-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ILZ079-100>102-212300-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-212300-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 67 59 75 E8 30.06F TC 19
MARION CLOUDY 66 61 82 N6 30.07F TC 19
ILZ067-068-072-073-078-083-087-091-212300-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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