{"station":{"icao":"KORD","cliId":"ORD","pil":"CLIORD","city":{"slug":"chicago","name":"시카고","country":"United States"},"timezone":"America/Chicago","feed":"https://api.weather.gov/products/types/CLI/locations/ORD","html":"https://weathermarket.io/nws-cli/KORD","json":"https://weathermarket.io/api/nws-cli/KORD"},"stationToday":"2026-11-14","day":{"date":"2026-10-17","status":"issued","note":"Final CLI issued - values.nwsOfficial carries the official daily values (metric here; official.issued.asReported keeps the °F / inch / mph exactly as printed).","settlement":{"tmaxF":57,"tminF":39,"precipIn":0,"precipTrace":false,"tmax":13.89,"tmin":3.89,"precip":0,"issuedAt":"2026-10-18T06:31:00.000Z","productId":"iem:CDUS43-KLOT-180631:ORD:2026-10-17:final","corrected":false,"reissues":0,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIORD&e=202610180631"},"issues":[{"kind":"interim","asOfLocal":"0400 PM","issuedAt":"2026-10-17T21:32:00.000Z","issuedLocal":"432 PM CDT SAT OCT 17 2026","office":"KLOT","wmoHeader":"CDUS43 KLOT 172132","productId":"iem:CDUS43-KLOT-172132:ORD:2026-10-17:interim","source":"iem-afos","corrected":false,"tmaxF":57,"tmaxTimeLocal":"2:47 PM","tminF":39,"tminTimeLocal":"6:51 AM","precipIn":0,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIORD&e=202610172132","parseProblems":[],"rawTextSha256":"9f22fa21cdff241968e507c785183ecf48d4ac1de454675dd796451f72517ac8","rawText":"CDUS43 KLOT 172132\nCLIORD\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE CHICAGO IL\n432 PM CDT SAT OCT 17 2026\n\n...................................\n\n...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 17 2026...\nVALID TODAY AS OF 0400 PM LOCAL TIME.\n\nCLIMATE NORMAL PERIOD: 1991 TO 2020\nCLIMATE RECORD PERIOD: 1871 TO 2026\n\n\nWEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST \n VALUE (LST) VALUE VALUE FROM YEAR \n NORMAL \n...................................................................\nTEMPERATURE (F) \n TODAY \n MAXIMUM 57 2:47 PM 86 1950 62 -5 74 \n MINIMUM 39 6:51 AM 26 1948 45 -6 57 \n AVERAGE 48 54 -6 66 \n\nPRECIPITATION (IN) \n TODAY 0.00 3.61 1988 0.11 -0.11 0.00 \n MONTH TO DATE 2.54 1.91 0.63 1.55 \n SINCE SEP 1 6.24 5.10 1.14 2.04 \n SINCE JAN 1 37.21 31.81 5.40 24.49 \n\nSNOWFALL (IN) \n TODAY 0.0 T 1930 0.0 0.0 0.0 \n 1976 \n 2022 \n MONTH TO DATE 0.0 0.0 0.0 0.0 \n SINCE SEP 1 0.0 0.0 0.0 0.0 \n SINCE JUL 1 0.0 0.0 0.0 0.0 \n SNOW DEPTH 0 \n\nDEGREE DAYS \n HEATING \n TODAY 17 12 5 0 \n MONTH TO DATE 64 153 -89 59 \n SINCE SEP 1 91 230 -139 91 \n SINCE JUL 1 91 236 -145 96 \n\n COOLING \n TODAY 0 0 0 1 \n MONTH TO DATE 31 12 19 56 \n SINCE SEP 1 218 128 90 222 \n SINCE JAN 1 1144 1000 144 1214 \n...................................................................\n\n\nWIND (MPH) \n HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340) \n HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION N (340) \n AVERAGE WIND SPEED 7.0 \n\n\nSKY COVER \n AVERAGE SKY COVER 0.2 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED TODAY. \n NO SIGNIFICANT WEATHER WAS OBSERVED. \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 70 7:00 AM \n LOWEST 43 3:00 PM \n AVERAGE 57 \n\n..........................................................\n\n\nTHE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 62 87 1950 \n MINIMUM TEMPERATURE (F) 45 20 1948 \n\n\nSUNRISE AND SUNSET \nOCTOBER 17 2026.......SUNRISE 7:06 AM CDT SUNSET 6:07 PM CDT \nOCTOBER 18 2026.......SUNRISE 7:08 AM CDT SUNSET 6:05 PM CDT \n\n\n- INDICATES NEGATIVE NUMBERS.\nR INDICATES RECORD WAS SET OR TIED.\nMM INDICATES DATA IS MISSING.\nT INDICATES TRACE AMOUNT.\n\n\n\n\n$$"},{"kind":"final","asOfLocal":null,"issuedAt":"2026-10-18T06:31:00.000Z","issuedLocal":"131 AM CDT SUN OCT 18 2026","office":"KLOT","wmoHeader":"CDUS43 KLOT 180631","productId":"iem:CDUS43-KLOT-180631:ORD:2026-10-17:final","source":"iem-afos","corrected":false,"tmaxF":57,"tmaxTimeLocal":"2:47 PM","tminF":39,"tminTimeLocal":"6:51 AM","precipIn":0,"precipTrace":false,"snowIn":0,"snowTrace":false,"nwsProductUrl":null,"iemArchiveUrl":"https://mesonet.agron.iastate.edu/wx/afos/p.php?pil=CLIORD&e=202610180631","parseProblems":[],"rawTextSha256":"7839fdb51e9d10e93d86e7a15ea7e2b32f90b041815ba563eb8784df65682308","rawText":"CDUS43 KLOT 180631\nCLIORD\n\nCLIMATE REPORT \nNATIONAL WEATHER SERVICE CHICAGO IL\n131 AM CDT SUN OCT 18 2026\n\n...................................\n\n...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 17 2026...\n\nCLIMATE NORMAL PERIOD: 1991 TO 2020\nCLIMATE RECORD PERIOD: 1871 TO 2026\n\n\nWEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST \n VALUE (LST) VALUE VALUE FROM YEAR \n NORMAL \n...................................................................\nTEMPERATURE (F) \n YESTERDAY \n MAXIMUM 57 2:47 PM 86 1950 62 -5 74 \n MINIMUM 39 6:51 AM 26 1948 45 -6 57 \n AVERAGE 48 54 -6 66 \n\nPRECIPITATION (IN) \n YESTERDAY 0.00 3.61 1988 0.11 -0.11 0.00 \n MONTH TO DATE 2.54 1.91 0.63 1.55 \n SINCE SEP 1 6.24 5.10 1.14 2.04 \n SINCE JAN 1 37.21 31.81 5.40 24.49 \n\nSNOWFALL (IN) \n YESTERDAY 0.0 T 1930 0.0 0.0 0.0 \n 1976 \n 2022 \n MONTH TO DATE 0.0 0.0 0.0 0.0 \n SINCE SEP 1 0.0 0.0 0.0 0.0 \n SINCE JUL 1 0.0 0.0 0.0 0.0 \n SNOW DEPTH 0 \n\nDEGREE DAYS \n HEATING \n YESTERDAY 17 12 5 0 \n MONTH TO DATE 64 153 -89 59 \n SINCE SEP 1 91 230 -139 91 \n SINCE JUL 1 91 236 -145 96 \n\n COOLING \n YESTERDAY 0 0 0 1 \n MONTH TO DATE 31 12 19 56 \n SINCE SEP 1 218 128 90 222 \n SINCE JAN 1 1144 1000 144 1214 \n...................................................................\n\n\nWIND (MPH) \n HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340) \n HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION N (340) \n AVERAGE WIND SPEED 7.7 \n\n\nSKY COVER \n AVERAGE SKY COVER 0.2 \n\n\nWEATHER CONDITIONS \nTHE FOLLOWING WEATHER WAS RECORDED YESTERDAY. \n NO SIGNIFICANT WEATHER WAS OBSERVED. \n\n\nRELATIVE HUMIDITY (PERCENT)\n HIGHEST 70 11:00 PM \n LOWEST 43 3:00 PM \n AVERAGE 57 \n\n..........................................................\n\n\nTHE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY\n NORMAL RECORD YEAR \n MAXIMUM TEMPERATURE (F) 62 87 1950 \n MINIMUM TEMPERATURE (F) 45 20 1948 \n\n\nSUNRISE AND SUNSET \nOCTOBER 18 2026.......SUNRISE 7:08 AM CDT SUNSET 6:05 PM CDT \nOCTOBER 19 2026.......SUNRISE 7:09 AM CDT SUNSET 6:04 PM CDT \n\n\n- INDICATES NEGATIVE NUMBERS.\nR INDICATES RECORD WAS SET OR TIED.\nMM INDICATES DATA IS MISSING.\nT INDICATES TRACE AMOUNT.\n\n\n\n\n$$"}],"html":"https://weathermarket.io/nws-cli/KORD/2026-10-17","json":"https://weathermarket.io/api/nws-cli/KORD/2026-10-17"},"about":{"product":"NWS Climatological Report (CLI): the daily climate summary issued by the local NWS forecast office from the station's 1-minute ASOS record, normally 1-3 hours after local midnight (final, 'YESTERDAY') and once during the day (interim, 'TODAY AS OF'). Corrections are re-issued under the same PIL with CORRECTED in the text.","settlementRule":"The settlement value for a date is the latest final CLI issued for that date; a corrected re-issue supersedes earlier issues. Interim same-day products never settle. This is the same rule that fills values.nwsOfficial in /api/station/{icao}/daily.","archive":"Every issue is stored verbatim as received - nothing is edited or re-derived. Products are held from 2026-09-01 (backfilled from the IEM AFOS archive) and ingested live from api.weather.gov since 2026-11-10, polled every 30 minutes. A date with no final CLI 14 hours after local midnight is reported as not_issued rather than filled in.","verify":["Each issue carries the NWS product id (api.weather.gov keeps products for a limited time) and a link to the IEM AFOS permanent archive of the same product.","rawTextSha256 is the SHA-256 of the stored product text; compare it with the text at either link to confirm nothing was altered.","Permalink pattern for market rules: https://weathermarket.io/nws-cli/KORD/YYYY-MM-DD (HTML) and https://weathermarket.io/api/nws-cli/KORD/YYYY-MM-DD (JSON)."],"citation":"Settlement source: the final NWS Climatological Report (CLI) for station KORD for the contract date, as archived verbatim at https://weathermarket.io/nws-cli/KORD/YYYY-MM-DD with links to the NWS product and the IEM archive. A CORRECTED re-issue published before the settlement time supersedes earlier issues."}}