586
ASUS43 KLOT 210501
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 AM 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.
ILZ001-002-007-009-015-016-024-210600-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 53 39 59 E14 30.26R TC 12
STERLING* PTCLDY 49 34 56 E10 30.28F TC 9
SAVANNA* PTCLDY 50 35 56 E9 30.29S TC 10
ILZ003-004-008-010-011-017-018-210600-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 49 33 54 VRB3 30.31S TC 9
FREEPORT* PTCLDY 47 38 72 E5 30.31S TC 8
ILZ005-006-012>014-019>023-210600-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 48 35 60 N12 30.28R TC 9
CHICAGO-MIDWAY PTCLDY 50 36 58 NE9 30.27R TC 10
AURORA CLEAR 45 35 68 NE8 30.26F TC 7
WAUKEGAN PTCLDY 48 36 63 NE12G18 30.28R TC 9
DUPAGE AIRPORT CLEAR 43 34 70 N9 30.27R TC 6
WHEELING PTCLDY 45 37 73 N6 30.30R TC 7
LANSING* CLEAR 47 37 66 NE6 30.26S TC 9
NORTHERLY ISL* N/A 49 39 68 N7 N/A TC 9
LMZ740>746-210600-
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 48 1022.9R 3/ 4
WAUKEGAN HARBOR 49 50 340/ 14/ 17 1024.1R 3/ 5
WILMETTE BUOY 50 80/ 14/ 19 1025.4F 3/ 5
CHICAGO BUOY 51 54 30/ 14/ 17 1023.3F 3/ 4
HARRISON CRIB 50 40/ 13/ 18 N/A
NORTHERLY ISL 49 350/ 9/ 13 N/A
CALUMET HARBOR 50 350/ 8/ 10 1024.8
BURNS HARBOR 52 50/ 9/ 11 1024.7F
MICHIGAN CITY 53 30/ 15/ 17 1023.2F
ST. JOSEPH BUOY 54 30/ 12/ 17 1024.7F 4/ 6
ILZ025>027-034>036-040-047-049-050-058-095>099-210600-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 57 49 74 E7 30.18F TC 14
ILZ028>032-037-038-041>044-048-051>054-059>061-210600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 49 38 65 NE12 30.25S TC 9
DECATUR PTCLDY 50 42 74 MISG 30.22R TC 10
PEORIA PTCLDY 53 39 59 E10 30.25R TC 12
SPRINGFIELD LGT RAIN 54 41 61 E8 30.21S TC 12
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-210600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 51 37 58 NE17G24 30.21F TC 11
MATTOON MOCLDY 54 42 64 NE14 30.18F TC 12
ILZ079-100>102-210600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CAHOKIA* CLOUDY 64 56 75 N6 30.16S TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210600-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
MT. VERNON CLOUDY 61 55 81 NE9 30.14F TC 16
SALEM* CLOUDY 62 57 85 MISG 30.15F TC 17
ILZ067-068-072-073-078-083-087-091-210600-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 61 54 77 NE12 30.15S TC 16
FAIRFIELD* MOCLDY 61 52 73 NE10 30.13F TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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