Proceedings of the National Academy of Sciences of the United States of America
Journal metrics
Annual Clarivate and SCImago indicators.
| Year | JCR | SJR | ||||
|---|---|---|---|---|---|---|
| IF | IF quartile | Rank (percentile) | SJR | SJR quartile | Rank (percentile) | |
| 2025 | 9.5 | Q1 | 90.7% | 3.283 | Q1 | 97.9% |
| 2024 | 9.1 | Q1 | 90.4% | 3.414 | Q1 | 98.2% |
| 2023 | 9.4 | Q1 | 91.5% | 3.737 | Q1 | 98.6% |
| 2022 | 11.1 | Q1 | 92.9% | 4.026 | Q1 | 98.8% |
| 2021 | 12.8 | Q1 | 94.4% | 4.184 | Q1 | 98.8% |
| 2020 | — | — | 5.011 | Q1 | 99.0% | |
| 2019 | — | — | 5.165 | Q1 | 99.1% | |
| 2018 | — | — | 5.601 | Q1 | 99.1% | |
Impact history
Annual SJR and Impact Factor trend.
SJRIF
Journal record
eISSN
0027-8424
ISSN
1091-6490
region
Northern America
coverage
1917, 1933, 1945-1952, 1954-1955, 1960-2026