176
ASUS43 KLOT 210510
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 CLEAR 53 39 59 E14 30.26R TC 12
STERLING* CLEAR 49 34 56 E10 30.28F TC 9
SAVANNA* CLEAR 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
ROCHELLE* PTCLDY 48 31 53 NE9 30.29S TC 9
DE KALB* PTCLDY 44 34 67 N7 30.28F TC 7
PERU* CLEAR 48 36 61 NE8 30.27S TC 9
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 PTCLDY 45 35 68 NE8 30.26F TC 7
JOLIET* CLEAR 49 34 55 NE8 30.26S TC 10
WAUKEGAN PTCLDY 48 36 63 NE12G18 30.28R TC 9
DUPAGE AIRPORT PTCLDY 43 34 70 N9 30.27R TC 6
KANKAKEE* CLEAR 48 34 58 NE8 30.25R TC 9
WHEELING PTCLDY 45 37 73 N6 30.30R TC 7
MORRIS* CLEAR 48 34 57 NE3 30.25F TC 9
ROMEOVILLE* CLEAR 48 34 57 N13G18 30.27S TC 9
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 1023.0 3/ 5
WAUKEGAN HARBOR 49 50 340/ 12/ 16 1024.1 3/ 4
WILMETTE BUOY 50 80/ 14/ 19 1025.6R 3/ 5
CHICAGO BUOY 51 54 50/ 16/ 19 1023.3 3/ 5
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 40/ 12/ 16 1024.6F 3/ 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
GALESBURG* MOCLDY 54 40 60 E10G16 30.25F TC 12
MACOMB* PTCLDY 54 47 78 E5 30.25S TC 12
JACKSONVILLE* CLEAR 55 45 70 NE8 30.21S TC 13
PITTSFIELD* PTCLDY 58 49 71 E7 30.21S TC 15
ILZ028>032-037-038-041>044-048-051>054-059>061-210600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLEAR 48 37 65 MISG 30.25S TC 9
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
LACON* PTCLDY 49 36 58 NE5 30.26S TC 10
LINCOLN* CLEAR 54 41 62 NE9 30.24R TC 12
SPRINGFIELD TSTM 54 41 61 NE8 30.22R TC 12
TAYLORVILLE PTCLDY 54 43 66 NE13 30.21S TC 12
ILZ033-039-045-046-055>057-062-063-210600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN MOCLDY 51 37 58 NE17G24 30.21F TC 11
DANVILLE* MOCLDY 51 39 62 NE10 30.22F TC 11
RANTOUL* PTCLDY 50 36 58 NE10 30.22S TC 10
MATTOON MOCLDY 54 42 64 NE14 30.18F TC 12
PARIS* MOCLDY 54 41 62 NE6 30.20S TC 12
ILZ079-100>102-210600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 62 49 63 NE7 30.19R TC 17
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
CAIRO* CLOUDY 64 61 91 CALM 30.11F TC 18
EFFINGHAM* CLOUDY 59 54 83 N3 30.19S TC 15
MARION MOCLDY 61 60 98 NE3 30.13F TC 16
MT. VERNON CLOUDY 61 55 81 NE9 30.14F TC 16
CENTRALIA* CLOUDY 62 55 78 CALM 30.15F TC 17
SALEM* CLOUDY 62 57 85 MISG 30.15F TC 17
METROPOLIS* CLOUDY 63 63 100 N6 30.10F 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
FLORA* MOCLDY 61 55 82 NE3 30.16F TC 16
FAIRFIELD* MOCLDY 61 52 73 NE10 30.13F TC 16
HARRISBURG* CLOUDY 62 56 82 NE9 30.12F TC 17
ROBINSON* CLOUDY 61 55 82 N7 30.16S TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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