The table below gives the MAXIMUM heat index forecast for days 3 through 7 at CHICAGO_IL.
| MON | TUE | WED | THU | FRI | |
|---|---|---|---|---|---|
| AUG 17 | AUG 18 | AUG 19 | AUG 20 | AUG 21 | |
| MAXIMUM HEAT INDEX | 80 F | 77 F | 81 F | 82 F | 83 F |
| PROBABILITY OF MAXIMUM HEAT INDEX EXCEEDING: | |||||
| 115 F | 0 % | 0 % | 0 % | 0 % | 0 % |
| 110 F | 0 % | 0 % | 0 % | 0 % | 0 % |
| 105 F | 0 % | 0 % | 0 % | 1 % | 0 % |
| 100 F | 0 % | 0 % | 0 % | 2 % | 1 % |
| 95 F | 0 % | 0 % | 0 % | 7 % | 4 % |
| 90 F | 2 % | 0 % | 4 % | 19 % | 15 % |
| 85 F | 17 % | 4 % | 21 % | 38 % | 37 % |
| 80 F | 51 % | 23 % | 54 % | 61 % | 66 % |