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Joan

Gyeonggitown

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Air quality index

141Unhealthy for Sensitive Groups
Coordinates37.57°, 127.30°

Demographic figures from Statistics Korea (KOSTAT). Overview below cites Wikipedia and may reference a different year.

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City facts

Overview

Situated in Gyeonggi, South Korea, Joan is a town. Joan maps to 37.569°, 127.298° — squarely within the warm temperate belt. No reliable population estimate is published for this entry in the open data we rely on. Solar-resource estimates put the area at about 1,391 kWh/m² of solar irradiance per year with sunshine for roughly 54% of daylight hours. The latitude suggests warm summers and cool winters. Open-data panels below dive into population trends, climate normals, environmental indicators and nearby places.

Summary composed automatically from structured open data on this page. See our Terms for details.

History & geography

Geography

Latitude
37.5688
Longitude
127.2977
Water area
—
View on OpenStreetMap

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

Climate

Air quality

US AQI — Unhealthy for Sensitive Groups
141
PM2.5 (µg/m³)
35.7
PM10 (µg/m³)
61.9
Ozone (µg/m³)
38
NO₂ (µg/m³)
40.2

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

Walkability

Amenities nearby

Wildlife & biodiversity

Observations (last 5 yrs, 10 mi)
120,597
Distinct species (top 10)
10

Most-observed species

  • Oriental Magpie
    Pica serica Gould, 1845 · Aves
    3,105
  • Brown-eared Bulbul
    Hypsipetes amaurotis (Temminck, 1830) · Aves
    3,035
  • Large-billed Crow
    Corvus macrorhynchos Wagler, 1827 · Aves
    2,981
  • Eurasian Tree Sparrow
    Passer montanus (Linnaeus, 1758) · Aves
    2,957
  • Cinereous Tit
    Parus cinereus Vieillot, 1818 · Aves
    2,847
  • Gray/Purple Heron
    Ardea cinerea Linnaeus, 1758 · Aves
    2,569
  • Marsh Tit
    Poecile palustris (Linnaeus, 1758) · Aves
    2,566
  • Oriental Turtle-Dove
    Streptopelia orientalis (Latham, 1790) · Aves
    2,538

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

Earthquake history

Quakes ≥ 2.5 (25 yrs, 62 mi)
2
Largest magnitude
3.6
Largest event
2023-01-08

Most recent

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

Photos

Sights & places nearby

Notable people from here

Nearby places in Gyeonggi

Browse all places in Gyeonggi →

Geography & sun

Avg solar (kWh/m²/day)
3.81
Annual solar (kWh/m²)
1,391

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

Nearby airports

Public attention

Books about this place

Recent natural events nearby

Ground air-quality sensors

Recently spotted species

Great Spotted Woodpecker
Great Spotted Woodpecker
Dendrocopos major
Seen 2026-10-14
Brown Marmorated Stink Bug
Brown Marmorated Stink Bug
Halyomorpha halys
Seen 2026-10-12
Black-footed Bush-cricket
Black-footed Bush-cricket
Phaneroptera nigroantennata
Seen 2026-10-11
Asian Jumping Mantis
Asian Jumping Mantis
Statilia maculata
Seen 2026-10-11
Water Deer
Water Deer
Hydropotes inermis
Seen 2026-10-07
Great Egret
Great Egret
Ardea alba
Seen 2026-10-04
Giant Asian Mantis
Giant Asian Mantis
Hierodula patellifera
Seen 2026-10-04
Predatory Carp
Predatory Carp
Chanodichthys erythropterus
Seen 2026-10-04
Bluegill
Bluegill
Lepomis macrochirus
Seen 2026-10-04

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

Events

Gallery

Sources

  • • Open-Meteo Air Quality (CAMS)
  • • USGS Earthquake Catalog (global feed)
  • • GBIF (Global Biodiversity Information Facility)
  • • iNaturalist
  • • Open-Meteo / sunrise-sunset.org