549
ASUS43 KLOT 220410
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 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.
ILZ001-002-007-009-015-016-024-220500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 59 44 57 E10 30.13S TC 15
STERLING* MOCLDY 54 38 54 E13 30.17F TC 12
SAVANNA* MOCLDY 54 42 62 NE9 30.18S TC 12
ILZ003-004-008-010-011-017-018-220500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 51 34 52 NE8G16 30.22S TC 11
FREEPORT* MOCLDY 51 38 63 E9 30.21F TC 10
ROCHELLE* MOCLDY 52 35 52 NE15 30.19F TC 11
DE KALB* CLOUDY 51 37 59 NE10 30.20F TC 11
PERU* CLOUDY 55 39 54 E10 30.16F TC 13
ILZ005-006-012>014-019>023-220500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 51 40 65 NE10 30.20F TC 11
CHICAGO-MIDWAY CLOUDY 52 42 69 NE9 30.20F TC 11
AURORA CLOUDY 53 38 56 NE14 30.18F TC 12
JOLIET* CLOUDY 54 40 60 NE9 30.18F TC 12
WAUKEGAN MOCLDY 51 40 65 NE12G23 30.22S TC 11
DUPAGE AIRPORT CLOUDY 52 38 58 NE9 30.19F TC 11
KANKAKEE* MOCLDY 53 42 67 NE9 30.18S TC 12
WHEELING MOCLDY 50 42 74 NE7 30.22F TC 10
MORRIS* CLOUDY 54 39 58 E6 30.17F TC 12
ROMEOVILLE* CLOUDY 52 41 66 NE13 30.19F TC 11
LANSING* CLOUDY 51 44 76 NE5 30.20F TC 11
NORTHERLY ISL* N/A 50 43 77 N6 N/A TC 10
LMZ740>746-220500-
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 1022.5 3/ 4
WAUKEGAN HARBOR 50 50 10/ 14/ 17 1021.8 2/ 5
WILMETTE BUOY 51 100/ 17/ 25 1022.8F 3/ 5
CHICAGO BUOY 52 55 10/ 6/ 12 1021.3 3/ 5
HARRISON CRIB 51 20/ 9/ 10 N/A
NORTHERLY ISL 50 340/ 7/ 16 N/A
CALUMET HARBOR 51 360/ 5/ 8 1022.9
BURNS HARBOR 56 100/ 5/ 7 1023.0F
MICHIGAN CITY 58 80/ 7/ 9 1021.7F
ST. JOSEPH BUOY 58 110/ 8/ 12 1023.5F 2/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-220500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOCLDY 61 49 64 E7 30.07F TC 16
GALESBURG* MOCLDY 60 45 57 E9 30.13S TC 16
MACOMB* MOCLDY 60 47 60 CALM 30.13S TC 16
JACKSONVILLE* CLOUDY 63 50 62 E8 30.08F TC 17
PITTSFIELD* CLOUDY 63 52 67 CALM 30.09F TC 17
ILZ028>032-037-038-041>044-048-051>054-059>061-220500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 57 41 56 MISG 30.15F TC 14
BLOOMINGTON CLOUDY 59 44 57 E13 30.14F TC 15
DECATUR PTCLDY 57 48 72 MISG 30.11F TC 14
PEORIA CLOUDY 61 44 53 E12 30.13S TC 16
LACON* CLOUDY 58 40 52 NE10 30.14F TC 14
LINCOLN* CLOUDY 64 46 50 E8 30.12S TC 18
SPRINGFIELD CLOUDY 64 47 53 E10 30.09F TC 18
TAYLORVILLE CLOUDY 63 52 67 E7 30.09F TC 17
ILZ033-039-045-046-055>057-062-063-220500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 62 45 53 E17G25 30.12F TC 17
DANVILLE* CLOUDY 62 41 46 E15G25 30.14F TC 17
RANTOUL* CLOUDY 62 42 48 E8 30.14S TC 17
MATTOON CLOUDY 64 48 56 E8 30.09F TC 18
PARIS* CLOUDY 61 47 59 E8 30.12F TC 16
ILZ079-100>102-220500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 63 56 77 CALM 30.07F TC 17
CAHOKIA* CLOUDY 64 56 75 E3 30.06F TC 18
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-220500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 64 59 83 NE6 30.05F TC 18
CAIRO* CLOUDY 66 62 87 NE8 30.04S TC 19
EFFINGHAM* CLOUDY 64 56 74 NE7 30.10F TC 18
MARION CLOUDY 63 59 87 N3 30.06F TC 17
MT. VERNON CLOUDY 64 58 80 NE6 30.07S TC 18
CENTRALIA* CLOUDY 64 57 78 CALM 30.07F TC 18
SALEM* CLOUDY 65 59 79 MISG 30.07F TC 19
METROPOLIS* CLOUDY 64 61 88 NE6 30.04F TC 18
ILZ067-068-072-073-078-083-087-091-220500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 65 53 65 NE9 30.08F TC 18
FLORA* CLOUDY 64 57 77 E8 30.08S TC 18
FAIRFIELD* CLOUDY 65 57 76 NE3 30.07S TC 18
HARRISBURG* CLOUDY 65 60 84 E3 30.06S TC 19
ROBINSON* CLOUDY 64 52 63 E12 30.09F TC 18
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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