The Mexican peso retreated by 0.15 percent, closing the day at 17.05 units per dollar, this Tuesday, August 18, 2026. National markets were pressured by investor caution ahead of the publication of the minutes from the Federal Reserve’s most recent meeting and by lower expectations for a prompt end to the conflict between the United States and Iran.
Financial markets experienced a shift at the start of the week as external pressures interrupted a period of relative strength for the domestic currency. Uncertainty over the Middle East grew after President Donald Trump stated that there are no talks with Tehran and asserted that the Strait of Hormuz was open, contradicting Iranian authorities, who had said that this key route for oil trade was closed to maritime traffic. In turn, the U.S. dollar operated within a narrow range amid lower bets for monetary tightening in the United States, while crude prices rose due to fears over energy supply, which also revived concerns about global inflation.
Exchange Rates and Banking Benchmarks
The price of the dollar today, Tuesday, August 18, 2026, in Mexico is located at 17.06 Mexican pesos, according to the reference exchange rate from the Bank of Mexico. The official exchange rate is determined by the Bank of Mexico based on an average of wholesale exchange market quotes for operations settleable on the second following business banking day and which are obtained from exchange transaction platforms and other electronic means with representativeness in the exchange market, the institution explained. The price of the dollar in Mexico for today, Tuesday, August 18, 2026, is 17.0661 Mexican pesos per unit. Retail and commercial banking institutions posted varying rates across their branch networks. At Banamex, the dollar is at 16.53 pesos for purchase and 17.47 pesos for sale. The behavior of the exchange rate has direct effects on remittances, travel, border trade, international payment transactions, and financial decisions of millions of people.
The Mexican peso began this Tuesday, August 18, losing ground in the markets, after the Bank of Mexico announced the price of the dollar reached $17.05 pesos, following another day of tension in the Middle East, something that could already be seen in the markets at the start of the week. Despite the fact that the dollar quote against the Mexican peso is $17.05, the national currency still maintains a 0.28% gain compared to recent days; however, the national currency was already close to breaking the $17 barrier since last Friday, as it closed the markets quoted at $16.97 per dollar. At the close of operations, the U.S. dollar was quoted at 17.06 Mexican pesos, representing an increase of 0.12% compared to the previous closing price of 17.04 pesos, according to Dow Jones. In the last week, the U.S. dollar recorded a decrease of -0.22%, while its year-on-year evolution shows a fall of -6.72%. In recent days, the U.S. dollar has shown a positive trend against the Mexican peso, marking two consecutive days of strengthening. Currently, the exchange rate volatility stands at 2.31%, notably lower than the reference volatility of 7.41%, suggesting a period of stability in the exchange market. The impact of investments related to nearshoring and the inflow of foreign currency generated by the 2026 World Cup could favor the strengthening of the Mexican peso.
This Tuesday, August 18, 2026, the Mexican peso maintains its quote against the U.S. dollar with a FIX reference exchange rate of $17.03 pesos per dollar, according to interbank market data. If you plan to exchange dollars at a banking institution, consider that the average selling price—that is, what you pay to buy dollars—is located at $17.11 pesos. On the other hand, if you want to sell your dollars to the bank, the average purchase price is $15.98 pesos. The difference between both prices, known as the spread, reflects the institution’s profit from the operation. Prices may vary depending on the bank and the amount of the operation. Exchange houses usually offer more competitive conditions than banks. Today, August 18, 2026, the selling price in exchange houses is $17.05 pesos per dollar, while the purchase price—what they pay you if you sell your dollars—stands at 16.08 pesos per dollar.
Banco Azteca: 16.70 pesos purchase | 17.84 pesos sale Banorte: 15.85 pesos purchase | 17.35 pesos sale BBVA Bancomer: 16.18 pesos purchase | 17.61 pesos sale Scotiabank: 16.50 pesos purchase | 17.60 pesos sale
Remittance senders navigating international transfer platforms also encountered distinct pricing structures. These are the quotes of the day for sending money from the United States to Mexico. In international money transfer companies, the dollar is quoted today at 17.31 MXN at Western Union. Meanwhile, the exchange rate is $1 dollar for 17.45 MXN at MoneyGram, and Wise operates at 16.93 pesos per dollar.
Geopolitical Pressures and Oil Markets
The Mexican peso begins this Tuesday losing ground against the dollar, and is moving further away from breaking the floor of 17 units, after a day marked by tensions in the Middle East. In the first minutes of this Tuesday, August 18, 2026, the exchange rate is quoted at 17.05 pesos per dollar; however, the national currency maintains a gain of 0.29% compared to the last 7 days, according to data from the Investing platform. According to data from this specialized site, on Friday, August 14, the parity between both currencies had been quoted at 16.97 units per dollar, its strongest level since June 3, 2024. However, on Monday, the Mexican currency failed to maintain its good pace. The dollar prevailed over the peso in Monday’s session.
Market analysts pointed directly to overseas developments as the primary catalyst for the peso’s modest depreciation. In an analysis for Investing, Gabriela Siller Pagaza, director of Economic and Financial Analysis at Grupo Financiero Base, explained that the movement responded to an increase in risk aversion due to the conflict in the Middle East.
Gabriela Siller Pagaza, director of Economic and Financial Analysis at Grupo Financiero Base, stated that although the depreciation was moderate, it was the largest since July 23 and was due to a correction after the exchange rate touched a low not seen since June 3, 2024, adding that the upward correction in the exchange rate was driven by an increase in risk aversion due to the conflict in the Middle East.
The unease intensified following statements concerning regional transit corridors and diplomatic talks. Energy markets reacted immediately to the friction.
Broader Economic Outlook and Central Bank Policy
Longer-term projections for the currency pair continue to factor in trade framework reviews and North American commerce dynamics. Analysts surveyed by Banco de México place the expected exchange rate between 20.00 and 20.50 pesos per dollar by the close of 2026, while government estimates from the Secretaría de Hacienda project the level near 19.70 pesos.
What to Watch Next
Market participants will look next to the impending release of the Federal Reserve’s policy meeting minutes for clearer signals regarding U.S. monetary easing timelines. Concurrently, traders will track ongoing diplomatic updates regarding the Strait of Ormuz to determine whether the recent spike in oil prices will translate into sustained currency volatility.
