Where can I find reliable historical daily exchange rate data for USD/ARS?
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Executive summary
For reliable historical daily USD/ARS rates use data vendors that publish day-by-day series such as Exchange‑Rates.org (daily tables and yearly pages) [1] [2] [3], Investing.com (downloadable daily OHLC close/open/high/low for selected ranges) [4] and PoundSterlingLive (daily USD/ARS series with high/low/open/close and mid) [5]. Commercial time‑series and institutional providers such as CEIC supply monthly series and extended archives sourced from Argentina’s Central Bank and IMF [6]. Free mid‑market charts and up-to‑10‑year history are also available on XE and Wise for quick lookups [7] [8] [9].
1. Where to get downloadable daily series — practical short list
If you need daily downloadable tables with open/high/low/close and percent change, Investing.com advertises free historical USD/ARS pages where you can view and export daily, weekly or monthly intervals [4]. Exchange‑Rates.org provides daily historical pages and yearly summary pages for USD/ARS and ARS/USD with day‑by‑day listings and charts for the year 2025 [1] [2] [3]. PoundSterlingLive maintains a day‑by‑day USD/ARS history that explicitly lists daily high, low, open, close and mid rates [5].
2. Mid‑market charts and quick lookups for context
For fast, visual exploration or a decade of history in chart form, XE offers free live currency charts that let you pair USD and ARS and view up to ten years of history [7]. Wise (formerly TransferWise) provides historical converters and short‑term fluctuations with daily highs/lows and recent weekly ranges if you just need quick verification of recent movements [8] [9].
3. Institutional and extended archives for research and reconciliation
If your work demands official series or monthly averages with long vintage continuity, CEIC compiles Argentina’s exchange‑rate against the USD with monthly updates going back to the 1970s and documents sourcing from the Central Bank of Argentina and, earlier, the IMF [6]. Wikipedia’s dedicated page on historical Argentine exchange rates summarizes currency resets and monthly tables across multiple peso iterations and can orient you on which series (current peso vs. legacy pesos) you should use for long‑run comparisons [10].
4. Cross‑checking and methodological cautions
Different providers report slightly different levels because they use distinct mid‑market feeds, banking spot rates, or aggregated exchange feeds; Exchange‑Rates.org explains it aggregates from multiple data providers using proprietary algorithms [1] [3]. Investing.com warns intellectual property and data‑provider limits and shows delayed quotes at times; Yahoo Finance similarly displays delayed currency quotes for ARS=X [4] [11]. Use the same provider consistently when doing time‑series analysis to avoid spurious “jumps” that are actually feed differences [1] [4].
5. Which source to pick for which purpose
Choose Exchange‑Rates.org or Investing.com for day‑by‑day downloadable CSVs for quantitative work or backtests [1] [4]. Use XE or Wise for quick charts and plausibility checks when you need a simple mid‑market reference [7] [8] [9]. Turn to CEIC (and the Central Bank/IMF via CEIC’s sourcing) when you need officially sourced monthly averages or long historical continuity across Argentina’s multiple peso iterations [6] [10].
6. What the recent data show and why it matters
Public pages show extreme depreciation in 2025 with USD/ARS rates above 1,400 and intra‑year peaks near 1,489 on October 24, 2025; Exchange‑Rates.org reports the 2025 high of 1,489.51 and lows around 1,030–1,142 depending on the page and direction of quoting [1] [3] [9]. TradingEconomics also reported a USD/ARS reading of 1,440.76 on December 12, 2025, highlighting very large annual moves [12]. These magnitudes mean you must confirm whether a series is spot, closing, mid‑market, or an official Central Bank average before using it in valuation or macro analysis [12] [6].
7. Limitations, disagreements and next steps
Available sources do not mention a single “authoritative” intraday feed that is free and guaranteed identical to the Central Bank’s publication; instead, expect differences across aggregators and between spot/mid/official averages [1] [4] [6]. For auditing or regulatory work, obtain the Central Bank’s official publication (CEIC documents that source) or buy a licensed feed from a commercial vendor; for general research, pick one of the listed providers, document which series you used, and cross‑check unusual spikes against at least one other data source [6] [1] [4].
If you want, I can: (a) show exact links on how to export CSVs from Exchange‑Rates.org and Investing.com [1] [4], (b) compare a specific date range across two providers and list discrepancies, or (c) point to where CEIC documents its Central Bank sourcing for monthly averages [6]. Which would you like next?