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McArthur

CaliforniaCDP

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Total population

346

Air quality index

47Good
Elevation1010 m
Weather42°F · Clear
Coordinates41.04°, -121.41°

Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.

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City facts

Overview

As a small census-designated community in California, United States, McArthur occupies its own corner of the country. The settlement sits at 41.042°, -121.405°, a temperate location in the northern hemisphere. Around 346 people are recorded as living there in the most recent open data. Open solar datasets indicate about 1,775 kWh/m² of solar irradiance per year, combined with sunshine for roughly 69% of daylight hours. Climatically, locations at this latitude tend to experience four distinct seasons with warm summers and cold winters. That works out to roughly 131 residents per square kilometre — a relatively low population density. Time-zone records list it under Q2204. Open data lists it as at a notable elevation of 1009 m, covering a small area of about 2.631245 km². Meteorological summaries report average highs near 68.1°F and lows near 42.3°F, together with about 25.6 in of annual precipitation (a moderate total). The remainder of this page draws on open public data to describe the area's demographics, climate, environment and nearby amenities.

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

History & geography

Demographics & economy

Geography

Latitude
41.0420
Longitude
-121.4052
Water area
0.03 mi²
View on OpenStreetMap

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

Climate

Avg high
68.1°F
Avg low
42.3°F
Annual precipitation
25.6 in

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

Current forecast

Tonight
42°F
Clear
Monday
78°F
Sunny
Monday Night
45°F
Clear
Tuesday
81°F
Sunny
Tuesday Night
50°F
Partly Cloudy
Wednesday
77°F
Mostly Sunny

Forecast for McArthur, CA from NOAA NWS API.

Air quality

US AQI — Good
47
PM2.5 (µg/m³)
3.8
PM10 (µg/m³)
7.4
Ozone (µg/m³)
95
NO₂ (µg/m³)
1.7

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

Industrial & pollution facilities

Natural hazard risk

Health (adults)

High blood pressure
30.6%
Diabetes
10.8%
Adult obesity
30.9%
Binge drinking
19.2%
Adult smoking
12.9%
No leisure activity
23.2%

Age-adjusted prevalence estimates from CDC PLACES (latest release).

Walkability

Amenities nearby

Wildlife & biodiversity

Observations (last 5 yrs, 10 mi)
34,960
Distinct species (top 10)
10

Most-observed species

  • Red-tailed Hawk
    Buteo jamaicensis (Gmelin, 1788) · Aves
    902
  • Great Blue/Cocoi Heron
    Ardea herodias Linnaeus, 1758 · Aves
    738
  • Brewer's Blackbird
    Euphagus cyanocephalus (Wagler, 1829) · Aves
    723
  • Canada Goose (canadensis Group)
    Branta canadensis (Linnaeus, 1758) · Aves
    690
  • Mallard
    Anas platyrhynchos Linnaeus, 1758 · Aves
    687
  • Pied-billed Grebe
    Podilymbus podiceps (Linnaeus, 1758) · Aves
    668
  • Red-winged Blackbird
    Agelaius phoeniceus (Linnaeus, 1766) · Aves
    632
  • American Robin
    Turdus migratorius Linnaeus, 1766 · Aves
    629

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

Schools

Total
5
Elementary
2
Middle
0
High
3
Other
0

Largest nearby schools

  • Fall River Elementary
    Elementary · Fall River Mills · 282 students · 18.8:1 ratio
  • Fall River Junior-Senior High
    High · McArthur · 275 students · 21.2:1 ratio
  • Fall River Community Day
    High · McArthur · 12 students · 12:1 ratio
  • Soldier Mountain High (Continuation)
    High · McArthur · 11 students · 11:1 ratio
  • Fall River Elementary Community Day
    Elementary · Fall River Mills

Public K–12 schools within ~10 mi from Urban Institute Education Data Portal (NCES Common Core of Data, 2022).

Earthquake history

Quakes ≥ 2.5 (25 yrs, 62 mi)
454
Largest magnitude
5.69
Largest event
2013-05-24

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 California

Browse all places in California

Geography & sun

Elevation
3,314 ft (1010 m)
Avg solar (kWh/m²/day)
4.86
Annual solar (kWh/m²)
1,775

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

Nearby airports

Public attention

Wikipedia views (last 30 days)
237
Avg daily Wikipedia views
8
Attention level
Obscure

Pageview totals from the Wikimedia Pageviews API.

Books about McArthur

Search results from Open Library.

Recent natural events nearby

Ground air-quality sensors

Recently spotted species

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

Nearest stream gauge

Site
PIT R BL PIT NO 1 PH NR FALL RIVER MILLS CA
Distance
6.9 mi
Streamflow
928 cfs
Gage height
5.13 ft

Live readings from USGS NWIS · measured 2026-05-31 18:00 UTC.

Events

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

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

Sources

  • Open-Meteo (ERA5 reanalysis)
  • NOAA National Weather Service
  • Wikimedia Commons
  • Wikidata
  • Open-Meteo Air Quality (CAMS)
  • USGS Earthquake Catalog (global feed)
  • USGS NWIS (water data)
  • NCES via Urban Institute Education Data Portal
  • GBIF (Global Biodiversity Information Facility)
  • iNaturalist
  • CDC PLACES
  • Open-Elevation
  • Open-Meteo / sunrise-sunset.org
  • Wikipedia Pageviews API
  • Open Library
  • Wikidata SPARQL (CC0) — population, area, elevation, inception, head of government, Commons image