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Buenos Aires

Buenos Aires Citycity

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Buenos Aires

Total population

3,121,707

Founded

1580

Air quality index

61Moderate
Elevation25 m
Land area203.3 km²
WeatherAvg high 70.5°F
Coordinates-34.61°, -58.39°

Demographic figures from INDEC. Overview below cites Wikipedia and may reference a different year.

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City facts

Founded
1580
Elevation
25 m
Area
203.3 km²
Time zone
America/Argentina/Buenos_Aires
head of government
Jorge Macri
Official website
buenosaires.gob.ar

Facts from Wikidata (CC0).

Overview

Buenos Aires, officially the Autonomous City of Buenos Aires, is the capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− global city, according to the GaWC 2024 ranking. The city proper has a population of 3.1 million and its urban area has a population of 16.7 million, making it the 21st most populous metropolitan area in the world.

Read more on Wikipedia

History & geography

History

In 1516, navigator and explorer Juan Díaz de Solís, navigating in the name of Spain, was the first European to reach the Río de la Plata. His expedition was cut short when he was killed during an attack by the native Charrúa tribe in what is now Uruguay. The city of Buenos Aires was first established as Ciudad de Nuestra Señora Santa María del Buen Ayre A second (and permanent) settlement was established on 11 June 1580 by Juan de Garay, who arrived by sailing down the Paraná River from Asunción (now the capital of Paraguay). He dubbed the settlement "Santísima Trinidad" and its port became "Puerto de Santa María de los Buenos Aires." with the foreign powers eventually desisting from their demands. During most of the 19th century, the political status of the city remained a sensitive subject. It was already the capital of Buenos Aires Province, and between 1853 and 1860 it was the capital of the seceded State of Buenos Aires. The issue was fought out more than once on the battlefield, until the matter was finally settled in 1880 when the city was federalized and became the seat of government, with its mayor appointed by the president. The Casa Rosada became the seat of the president. In addition to the wealth generated by customs duties and Argentine foreign trade in general, as well as the existence of fertile pampas, railroad development in the second half of the 19th century increased the economic power of Buenos Aires as raw materials flowed into its factories. In 1888, by Law 2089, the national government of Argentina expanded the City of Buenos Aires by annexing the towns of Belgrano, Flores, and parts of General San Martín Partido, such as today's Villa Devoto. A leading destination for immigrants from Europe, particularly Italy and Spain, from 1880 to 1930,…

Geography

The city of Buenos Aires lies in the pampa region, with the exception of some areas such as the Buenos Aires Ecological Reserve, the Boca Juniors' "sports city", Jorge Newbery Airport, the Puerto Madero neighborhood and the main port itself; these were all built on reclaimed land along the coasts of the Rio de la Plata (the world's widest river). The region was formerly crossed by different streams and lagoons, some of which were refilled, and others tubed. Among the most important streams are the Maldonado, Vega, Medrano, Cildañez, and White. In 1908, as floods were damaging the city's infrastructure, many streams were channeled and rectified; furthermore, starting in 1919, most streams were enclosed. Most notably, the Maldonado was tubed in 1954; it currently runs below Juan B. Justo Avenue. Buenos Aires has over 250 parks and green spaces, the largest concentration of which are on the city's eastern side in the neighborhoods of Puerto Madero, Recoleta, Palermo, and Belgrano. Some of the most important are: *Parque Tres de Febrero was designed by urbanist Jordán Czeslaw Wysocki and architect Julio Dormal. The park was inaugurated on 11 November 1875. The subsequent dramatic economic growth of Buenos Aires helped to lead to its transfer to the municipal domain in 1888, whereby French Argentine urbanist Carlos Thays was commissioned to expand and further beautify the park, between 1892 and 1912. Thays designed the Zoological Gardens, the Botanical Gardens, the adjoining Plaza Italia and the Rose Garden. *Botanical Gardens, designed by French architect and landscape designer Carlos Thays, the garden was inaugurated on 7 September 1898. Thays and his family lived in an English style mansion, located within the gardens, between 1892 and 1898, when he served as director…

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Excerpted from the corresponding Wikipedia article (CC BY-SA).

Geography

Latitude
-34.6096
Longitude
-58.3888
Water area
View on OpenStreetMap

Coordinates & boundaries from the US Census TIGER/Line shapefiles.

Climate

Avg high
70.5°F
Avg low
57.8°F
Annual precipitation
39.4 in

10-year averages from ERA5 reanalysis (Open-Meteo).

Air quality

US AQI — Moderate
61
PM2.5 (µg/m³)
8
PM10 (µg/m³)
8.4
Ozone (µg/m³)
12
NO₂ (µg/m³)
17.6

Current readings from Open-Meteo Air Quality API (Copernicus CAMS European reanalysis).

Walkability

Amenities nearby

Wildlife & biodiversity

Observations (last 5 yrs, 10 mi)
1,000,018
Distinct species (top 10)
10

Most-observed species

  • Picazuro Pigeon
    Patagioenas picazuro (Temminck, 1813) · Aves
    24,874
  • Great Kiskadee
    Pitangus sulphuratus (Linnaeus, 1766) · Aves
    24,427
  • Rufous Hornero
    Furnarius rufus (Gmelin, 1788) · Aves
    24,312
  • Rufous-bellied Thrush
    Turdus rufiventris Vieillot, 1818 · Aves
    24,207
  • Monk Parakeet
    Myiopsitta monachus (Boddaert, 1783) · Aves
    21,844
  • Eared Dove
    Zenaida auriculata (Des Murs, 1847) · Aves
    21,833
  • Rock Pigeon
    Columba livia J.F.Gmelin, 1789 · Aves
    19,551
  • Southern Caracara
    Caracara plancus (J.F.Miller, 1777) · Aves
    19,155

Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).

Earthquake history

Quakes ≥ 2.5 (25 yrs, 62 mi)
1
Largest magnitude
3
Largest event
2018-11-30

Most recent

Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).

Photos

Sights & places nearby

Notable people from here

People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.

Nearby places in Buenos Aires City

Browse all places in Buenos Aires City

Geography & sun

Elevation
79 ft (24 m)
Avg solar (kWh/m²/day)
4.79
Annual solar (kWh/m²)
1,749

Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.

Nearby airports

Public attention

Wikipedia views (last 30 days)
81,129
Avg daily Wikipedia views
2,704
Attention level
Popular

Pageview totals from the Wikimedia Pageviews API.

Books about Buenos Aires

Search results from Open Library.

Recent natural events nearby

Ground air-quality sensors

Recently spotted species

Research-grade observations from iNaturalist (within ~15 mi).

Events

Notable, recurring, and historical events associated with Buenos Aires, sourced from Wikidata.

Source: Wikidata (CC0).

Geotagged photos within ~6 miles of Buenos Aires, from Wikimedia Commons contributors.

Photos via Wikimedia Commons — see each image page for license & attribution.

Official Identifiers

INDEC — Argentine Institute of Statistics

INDEC code
Buenos-Aires-Argentina-4
Population (Wikidata)
3,121,707
Wikidata
Q1486

Departamento ID via Wikidata P3417

Sources

  • Wikipedia
  • Open-Meteo (ERA5 reanalysis)
  • Wikimedia Commons
  • Wikidata
  • Open-Meteo Air Quality (CAMS)
  • USGS Earthquake Catalog (global feed)
  • GBIF (Global Biodiversity Information Facility)
  • iNaturalist
  • Open-Elevation
  • Open-Meteo / sunrise-sunset.org
  • Wikipedia Pageviews API
  • Open Library
  • Wikidata SPARQL (CC0) — population, area, elevation, inception, head of government, Commons image
  • INDEC — Argentine Institute of Statistics — Departamento ID via Wikidata P3417