510
ASUS43 KLOT 221001
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 AM CDT FRI MAY 22 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.
ILZ001-002-007-009-015-016-024-221100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 55 41 59 E9 30.08F TC 13
STERLING* MOCLDY 54 41 61 E14 30.12F TC 12
SAVANNA* CLOUDY 53 40 62 E8 30.13F TC 11
ILZ003-004-008-010-011-017-018-221100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 52 42 69 VRB7 30.17S TC 11
FREEPORT* CLOUDY 51 43 72 E12 30.16F TC 11
DE KALB* CLOUDY 53 44 73 E9 30.16S TC 12
PERU* CLOUDY 55 43 62 NE12 30.11F TC 13
ILZ005-006-012>014-019>023-221100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 53 42 66 E12 30.16S TC 12
CHICAGO-MIDWAY CLOUDY 53 45 74 NE13 30.16S TC 12
AURORA CLOUDY 55 45 68 E10 30.13F TC 13
JOLIET* CLOUDY 58 42 56 E7G16 30.14F TC 14
WAUKEGAN CLOUDY 48 40 73 E12 30.19S TC 9
DUPAGE AIRPORT CLOUDY 54 45 71 E12 30.14F TC 12
KANKAKEE* CLOUDY 55 41 57 E10 30.13S TC 13
WHEELING CLOUDY 51 42 71 E8 30.19S TC 11
MORRIS* CLOUDY 57 41 54 E10 30.12F TC 14
LANSING* CLOUDY 54 41 60 NE6 30.16S TC 12
NORTHERLY ISL* N/A 52 45 77 NE15 N/A TC 11
LMZ740>746-221100-
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 1020.9F 3/ 4
WAUKEGAN HARBOR 49 49 30/ 16/ 19 1021.2S 2/ 3
WILMETTE BUOY 50 90/ 17/ 23 1022.2F 3/ 4
CHICAGO BUOY 52 54 60/ 17/ 23 1020.3F 3/ 4
HARRISON CRIB 52 60/ 19/ 21 N/A
NORTHERLY ISL 52 50/ 14/ 16 N/A
CALUMET HARBOR 54 40/ 8/ 11 1021.4
BURNS HARBOR 55 70/ 6/ 8 1021.7S
MICHIGAN CITY 54 70/ 10/ 13 1020.5F
ST. JOSEPH BUOY 52 60/ 8/ 10 1022.6R 2/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-221100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 61 48 62 E10 30.01S TC 16
GALESBURG* MOCLDY 55 41 59 E13G18 30.08S TC 13
MACOMB* CLOUDY 58 46 63 CALM 30.08R TC 15
ILZ028>032-037-038-041>044-048-051>054-059>061-221100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLOUDY 55 41 59 E14 30.08F TC 13
DECATUR MOCLDY 55 46 71 MISG 30.04S TC 13
PEORIA CLOUDY 58 41 53 E12 30.07S TC 14
LINCOLN* CLOUDY 58 46 62 NE12 30.06R TC 15
SPRINGFIELD CLOUDY 58 46 64 NE12 30.03S TC 14
TAYLORVILLE MOCLDY 57 48 72 NE6 30.03R TC 14
ILZ033-039-045-046-055>057-062-063-221100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 54 45 71 NE15 30.05S TC 12
DANVILLE* CLOUDY 54 42 63 NE9 30.08S TC 12
MATTOON MOCLDY 55 48 77 NE8 30.01F TC 13
PARIS* MOCLDY 54 47 76 NE9 30.04F TC 12
ILZ079-100>102-221100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 61 55 82 CALM 29.99S TC 16
CAHOKIA* CLOUDY 63 56 78 E5 29.97S TC 17
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-221100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLOUDY 63 58 83 E7 29.95F TC 17
CAIRO* CLOUDY 64 61 91 E6 29.94F TC 18
EFFINGHAM* CLOUDY 59 52 76 NE3 30.02S TC 15
MT. VERNON CLOUDY 62 55 77 NE5 29.97F TC 17
CENTRALIA* MOCLDY 60 54 79 CALM 29.98S TC 16
SALEM* MOCLDY 61 54 78 MISG 29.98S TC 16
ILZ067-068-072-073-078-083-087-091-221100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 58 55 90 N7 29.99F TC 14
FLORA* CLOUDY 61 54 77 NE7 29.99S TC 16
FAIRFIELD* CLOUDY 63 55 75 E7 29.97F TC 17
HARRISBURG* CLOUDY 63 59 87 E7 29.96F TC 17
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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