# Washington Regular Gasoline · Retail Pressure Index (RPI-C)

- Series code: `retail.state_wa.gasoline_regular.weekly.rpi_c`
- Units: index · frequency: weekly
- Latest: **80.4 index** (2026-09-28)
- History: 2003-08-18 to 2026-09-28, 1207 observations
- Change over 1 week: -10.5 (-11.6%)
- Change over 1 month: +3.3 (+4.3%)
- Change over 1 year: +13.9 (+20.9%)
- Change over 5 years: +2.9 (+3.8%)
- 52-week range: 32.9 (2026-01-05) – 98.1 (2026-05-04)
- Latest value is higher than 84% of the full history

## Recent observations

| Date | Value |
|---|---|
| 2026-09-28 | 80.4 |
| 2026-09-21 | 90.9 |
| 2026-09-14 | 91.1 |
| 2026-09-07 | 92.6 |
| 2026-08-31 | 74.5 |
| 2026-08-24 | 77.1 |
| 2026-08-17 | 73.3 |
| 2026-08-10 | 61.4 |
| 2026-08-03 | 66.6 |
| 2026-07-27 | 69.0 |
| 2026-07-20 | 62.2 |
| 2026-07-13 | 56.7 |

Source: Calculated by NewTide from EIA source data. Derived from public-domain EIA data.
Page: https://thinkingonenergy.com/data/retail.state_wa.gasoline_regular.weekly.rpi_c/