USFWS · Arizona

Buenos Aires National Wildlife Refuge

Buenos Aires National Wildlife Refuge provides 117,107 acres (47,392 ha) of habitat for threatened and endangered plants and animals. This refuge, in Pima County, Arizona, was established in 1985.

From Wikipedia, licensed CC BY-SA 4.0.

National Wildlife Refuge117,677 acresUSFWSAZ
Official page at U.S. Fish and Wildlife Service ↗
Buenos Aires National Wildlife Refuge
Photo by Gentry George, U.S. Fish and Wildlife Service, in the public domain, from Wikimedia Commons.
1 fire
active
Nogales Piles Rx (prescribed burn) · 45 mi from the center · 101 acres
Interagency incident data as of 2026-11-01
Incident details ↓

Facts

Where each comes from ↓
DesignationNational Wildlife Refuge
Managed byU.S. Fish and Wildlife Service
StateArizona
Size117,677 acres
FWS regionRegion 2
Center point31.64° N, 111.46° W
Night skyVery dark ground, a faint glow at most (Black Marble reading 25)

Boundary map

5 outlines

Boundary, simplified to about 0.005 degrees

The outline is the agency boundary simplified for display, so small parcels and inholdings may not show. The agency page has the authoritative map.

Weather by month

NOAA climate normals →
Weather by month near Buenos Aires National Wildlife Refuge50°60°70°80°90°January: 0.91 inches of precipitationFebruary: 1.16 inches of precipitationMarch: 0.96 inches of precipitationApril: 0.46 inches of precipitationMay: 0.15 inches of precipitationJune: 0.35 inches of precipitationJuly: 2.77 inches of precipitationAugust: 3.20 inches of precipitationSeptember: 1.62 inches of precipitationOctober: 0.50 inches of precipitationNovember: 0.72 inches of precipitationDecember: 1.44 inches of precipitationJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 50.6°F averageFebruary: 51.9°F averageMarch: 56.6°F averageApril: 62.0°F averageMay: 69.2°F averageJune: 78.7°F averageJuly: 81.5°F averageAugust: 79.9°F averageSeptember: 76.1°F averageOctober: 67.3°F averageNovember: 57.8°F averageDecember: 50.0°F average0 in1 in2 in3 in4 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Sasabe, 12 miles from the center point at 3,590 feet, station USC00027619 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 14 inches a year.

Large units span more than one climate. The station stands in for the center point, and the outer parts of the boundary can be warmer or colder.

Fire nearby

Within 50 miles · as of 2026-11-01
  • Prescribed
    Nogales Piles Rx

    45 mi from the center point · 101 acres

Distance is to the reported incident point, not the fire edge, and is measured from the center of a boundary that may be many miles across. Check the agency page for closures.

Explore

Nearby on the other atlases

National Park System units within 30 miles · Park Atlas
National Historical Park · 13 mi
Tumacácori National Historical Park
National Register listings within 15 miles · 6 in all · Register Atlas

Landmarks are listed first, then by distance from the boundary.

Guidebooks for Arizona

We earn a small commission if you buy through these links. It does not change what we list.

  • Explore Tucson outdoors
    Karen Krebbs, 2017
    Find at Bookshop.org
  • Camping Arizona
    Bruce Grubbs, 2021
    Find at Bookshop.org
  • Best Tent Camping: Arizona
    Kirstin Olmon Phillips and Kelly Phillips, 2019
    Find at Bookshop.org

Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

How big is Buenos Aires National Wildlife Refuge?

117,677 acres.

Source: How acreage is computed

Who manages Buenos Aires National Wildlife Refuge?

The U.S. Fish and Wildlife Service.

Source: U.S. Fish and Wildlife Service

What state is Buenos Aires National Wildlife Refuge in?

Arizona.

Source: How states are assigned

How do I get to Buenos Aires National Wildlife Refuge?

A point inside the boundary is at 31.640° N, 111.459° W. Tumacácori National Historical Park is 13 miles away. The official page carries directions and the office address.

Source: U.S. Fish and Wildlife Service

Is there a fire near Buenos Aires National Wildlife Refuge right now?

1 active incident within 50 miles as of 2026-11-01, the nearest Nogales Piles Rx at 45 miles. Distance is to the reported incident point, not the fire edge.

Source: Fire nearby

Which national parks are near Buenos Aires National Wildlife Refuge?

Tumacácori National Historical Park (13 mi). Park Atlas has fees, hours and alerts for each.

Source: Nearby on the other atlases

Are there historic places near Buenos Aires National Wildlife Refuge?

The National Register has 6 listings within 15 miles, including Tumacacori Museum and U.s. Inspection Station--Sasabe, Arizona.

Source: Register Atlas

Sources

  • Boundary, name: the U.S. Fish and Wildlife Service refuge boundary layer.
  • States and territories: computed by intersecting the boundary with Census state polygons and coarse outlines of the territories and outlying islands. A place is listed when it holds at least one percent of the area. A boundary that touches no outline is listed under the nearest one.
  • Acreage: geodesic area of the published polygon. The agency’s official acreage can differ where the boundary includes water, easements or inholdings.
  • Photograph: the image Wikidata records for this refuge (Q1001853), the item linked to its Wikipedia article. Author and license come from the file page on Wikimedia Commons.
  • Description: Buenos Aires National Wildlife Refuge on Wikipedia, CC BY-SA 4.0. The article was accepted because its title contains this unit’s name.
  • Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
  • Night sky: NASA Black Marble (VIIRS, 2016 composite) sampled at zoom 6 around the center point.
  • Weather, alerts, air quality, river flow and earthquakes load live in your browser from NWS, AirNow, USGS and iNaturalist when you open the page.