{"title":"Chicago: Days at or above 100 F, days by year","description":"Days by year for Days at or above 100 F in Chicago.","dataAsOf":"2026-10-17T00:00:00Z","lastRevised":"2026-10-18","source":"Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products.","licence":"US Government open data (NOAA NCEI)","page":"https://worldextremeweathermonitor.com/cities/chicago/days-above-100f/","columns":[{"name":"threshold","description":"Threshold id, for example tmax_ge_40c."},{"name":"year","description":"Calendar year."},{"name":"days","description":"Days in the year at or beyond the threshold."},{"name":"first","description":"First qualifying date of the year."},{"name":"last","description":"Last qualifying date of the year."},{"name":"longest_streak","description":"Longest run of consecutive qualifying days inside the year."}],"rows":[{"threshold":"tmax_ge_100f","year":1980,"days":2,"first":"1980-07-07","last":"1980-07-20","longest_streak":1},{"threshold":"tmax_ge_100f","year":1983,"days":2,"first":"1983-07-22","last":"1983-07-28","longest_streak":1},{"threshold":"tmax_ge_100f","year":1988,"days":7,"first":"1988-06-20","last":"1988-08-02","longest_streak":2},{"threshold":"tmax_ge_100f","year":1989,"days":1,"first":"1989-07-10","last":"1989-07-10","longest_streak":1},{"threshold":"tmax_ge_100f","year":1991,"days":2,"first":"1991-07-22","last":"1991-08-02","longest_streak":1},{"threshold":"tmax_ge_100f","year":1995,"days":2,"first":"1995-07-13","last":"1995-07-14","longest_streak":2},{"threshold":"tmax_ge_100f","year":1999,"days":1,"first":"1999-07-30","last":"1999-07-30","longest_streak":1},{"threshold":"tmax_ge_100f","year":2005,"days":1,"first":"2005-07-24","last":"2005-07-24","longest_streak":1},{"threshold":"tmax_ge_100f","year":2012,"days":4,"first":"2012-06-28","last":"2012-07-06","longest_streak":3},{"threshold":"tmax_ge_100f","year":2023,"days":1,"first":"2023-08-24","last":"2023-08-24","longest_streak":1}]}