Season-final Elo for all four rated units. These are the opponent-strength values every player performance against Northern Iowa is judged with.
| Season | Rush Offense | Pass Offense | Rush Defense | Pass Defense |
|---|---|---|---|---|
| 2025 | 1152 | 1219 | 1203 | 1132 |
| 2024 | 1220 | 1346 | 1304 | 1126 |
| 2023 | 1199 | 1450 | 1522 | 1206 |
| 2022 | 1237 | 1420 | 1542 | 1270 |
| 2021 | 1125 | 1316 | 1612 | 1318 |
| 2020 | 1057 | 1210 | 1577 | 1360 |
| 2019 | 1054 | 1230 | 1564 | 1323 |
| 2018 | 1124 | 1264 | 1475 | 1199 |
| 2017 | 1190 | 1213 | 1510 | 1246 |
| 2016 | 1274 | 1124 | 1468 | 1292 |
| 2015 | 1376 | 1116 | 1472 | 1274 |
| 2014 | 1312 | 1158 | 1446 | 1268 |
| 2013 | 1300 | 1204 | 1338 | 1216 |
| 2012 | 1320 | 1288 | 1294 | 1182 |
| 2011 | 1344 | 1227 | 1393 | 1196 |
| 2010 | 1376 | 1252 | 1426 | 1152 |
| 2009 | 1366 | 1294 | 1406 | 1262 |
| 2008 | 1346 | 1267 | 1389 | 1224 |
| 2007 | 1352 | 1303 | 1305 | 1190 |
| 2006 | 1306 | 1198 | 1214 | 1184 |
| 2005 | 1206 | 1174 | 1192 | 1195 |
| 2004 | 1186 | 1186 | 1172 | 1190 |
| 2003 | 1156 | 1174 | 1145 | 1178 |
| 2002 | 1160 | 1159 | 1150 | 1194 |
| 2001 | 1176 | 1166 | 1152 | 1199 |