881
ASUS43 KLOT 210701
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 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.
ILZ001-002-007-009-015-016-024-210800-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE PTCLDY 49 38 65 E6 30.26S TC 9
STERLING* PTCLDY 48 34 58 NE9 30.27F TC 9
SAVANNA* PTCLDY 47 36 66 N5 30.29F TC 8
ILZ003-004-008-010-011-017-018-210800-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 48 33 56 NE6 30.30S TC 9
FREEPORT* PTCLDY 45 39 79 N6 30.32R TC 7
DE KALB* PTCLDY 45 34 65 NE8 30.27F TC 7
PERU* CLEAR 48 36 61 NE10 30.26F TC 9
ILZ005-006-012>014-019>023-210800-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 50 37 61 NE10 30.27S TC 10
CHICAGO-MIDWAY MOCLDY 53 33 46 NE15 30.26F TC 12
AURORA PTCLDY 45 36 70 NE8 30.26S TC 7
JOLIET* PTCLDY 49 37 63 NE7 30.25F TC 10
WAUKEGAN PTCLDY 47 35 63 NE10 30.29S TC 8
DUPAGE AIRPORT PTCLDY 44 37 76 NE8 30.26S TC 7
KANKAKEE* CLEAR 46 37 73 N5 30.26S TC 8
WHEELING MOCLDY 48 37 65 NE7 30.29S TC 9
MORRIS* CLEAR 46 36 66 CALM 30.25F TC 8
LANSING* CLEAR 49 39 70 NE8 30.25F TC 9
NORTHERLY ISL* N/A 52 39 61 NE16 N/A TC 11
LMZ740>746-210800-
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 1023.3F 3/ 5
WAUKEGAN HARBOR 49 50 350/ 10/ 14 1024.4S 3/ 5
WILMETTE BUOY 51 80/ 16/ 21 1025.7R 3/ 5
CHICAGO BUOY 53 54 40/ 17/ 21 1023.4F 3/ 4
HARRISON CRIB 52 50/ 22/ 24 N/A
NORTHERLY ISL 52 50/ 18/ 19 N/A
CALUMET HARBOR 52 30/ 11/ 18 1024.6F
BURNS HARBOR 52 40/ 8/ 9 1024.7S
MICHIGAN CITY 53 40/ 19/ 20 1023.3S
ST. JOSEPH BUOY 53 50/ 12/ 16 1025.3R 3/ 5
ILZ025>027-034>036-040-047-049-050-058-095>099-210800-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 56 43 61 E12 30.19R TC 13
GALESBURG* CLEAR 49 38 66 E9 30.25S TC 10
MACOMB* PTCLDY 52 42 70 NE8 30.26R TC 11
JACKSONVILLE* PTCLDY 52 42 70 NE12 30.19S TC 11
ILZ028>032-037-038-041>044-048-051>054-059>061-210800-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLEAR 46 36 67 MISG 30.25S TC 8
BLOOMINGTON CLEAR 46 37 71 NE10 30.24S TC 8
DECATUR MOCLDY 49 41 74 MISG 30.20F TC 9
PEORIA CLEAR 49 37 63 NE7 30.23F TC 9
LACON* CLEAR 46 36 68 CALM 30.25S TC 8
LINCOLN* CLEAR 49 40 70 NE7 30.22F TC 10
SPRINGFIELD LGT RAIN 51 39 63 NE10 30.19F TC 11
TAYLORVILLE MOCLDY 52 41 66 NE9 30.20F TC 11
ILZ033-039-045-046-055>057-062-063-210800-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTCLDY 49 37 63 NE12 30.21S TC 9
DANVILLE* PTCLDY 49 41 74 N9 30.22S TC 9
MATTOON MOCLDY 52 42 69 N9 30.17F TC 11
PARIS* CLOUDY 52 41 65 N9 30.19S TC 11
ILZ079-100>102-210800-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTCLDY 57 46 65 NE6 30.16S TC 14
CAHOKIA* PTCLDY 59 50 72 E8 30.13F TC 15
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210800-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* CLOUDY 64 60 87 N8 30.11S TC 18
EFFINGHAM* MOCLDY 54 47 77 N6 30.18F TC 12
MT. VERNON MOCLDY 59 54 83 N3 30.14F TC 15
CENTRALIA* MOCLDY 60 55 83 CALM 30.15S TC 16
SALEM* CLOUDY 59 51 75 MISG 30.15S TC 15
ILZ067-068-072-073-078-083-087-091-210800-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 60 53 77 NE9 30.13F TC 16
FLORA* CLOUDY 59 55 88 N12 30.15S TC 15
FAIRFIELD* CLOUDY 61 53 76 NE6 30.13F TC 16
HARRISBURG* CLOUDY 62 57 85 NE6 30.12F TC 16
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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