--- entity_id: city:us:geonames:4367734 entity_type: city name: Saint Charles country_code: US country: United States slug: saint-charles canonical_url: https://immigrationdb.com/cities/us/saint-charles/ json_url: https://immigrationdb.com/data/cities/us/saint-charles.json markdown_url: https://immigrationdb.com/data/cities/us/saint-charles.md mcp_uri: immigrationdb://city/us/saint-charles snapshot_id: approved-static-c751ebb1b4085a62 generated_at: 2026-09-14 last_verified: 2026-09-11 fact_count: 11 language_location_count: 0 employment_location_count: 0 city_intent_block_count: 1 usefulness_tier: answer_linked indexable: true metric_dictionary_url: https://immigrationdb.com/data/metrics.json license_url: https://immigrationdb.com/about/copyright/ citation_schema: immigrationdb-citation-v1 citation_canonical_url: https://immigrationdb.com/cities/us/saint-charles/ citation_title: "Saint Charles, United States: jobs, air quality, climate" citation_author: ImmigrationDB citation_publisher: ImmigrationDB citation_snapshot_id: approved-static-c751ebb1b4085a62 citation_version: approved-static-c751ebb1b4085a62 citation_retrieval_date: 2026-09-14 citation_build_date: 2026-09-14 citation_license_url: https://creativecommons.org/licenses/by/4.0/ --- # Saint Charles Saint Charles is a city in the United States, and the figures below are its published values. The unemployment rate was 5.91% at the end of 2024. Annual PM2.5 was 6.5 µg/m³ at the end of 2024. ## Mobility Saint Charles's nearest airport was DCA, 29 km away and offered 91 direct destinations. ## Climate Saint Charles's monthly mean temperatures were 1.1°C in January and 26.2°C in July. Saint Charles's monthly precipitation totalled 78.2 mm in January and 126 mm in July. Maximum PM2.5 in Saint Charles reached 18.9 µg/m³ at the end of 2024. ## Facts | Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Unemployment rate | `unemployment_total_percent` | 5.91 % | parent_municipality | 2024-12-31 | 2026-08-06 | stale | verified | [1] | | PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 6.55 µg/m³ | nearest_station | 2024-12-31 | 2026-08-06 | stale | verified | [2] | | Climate Monthly Extreme High C | `climate_monthly_extreme_high_c` | Jan 23.26 · Feb 23.04 · Mar 25.86 · Apr 33.76 · May 33.59 · Jun 36.9 · Jul 39.99 · Aug 39.16 · Sep 35.94 · Oct 35.53 · Nov 26.03 · Dec 23.15 °C | parent_municipality | 2001-12-31 | 2026-08-06 | stale | verified | [3] | | Climate Monthly Extreme Low C | `climate_monthly_extreme_low_c` | Jan -14.87 · Feb -16.74 · Mar -13.96 · Apr -3.09 · May 1.84 · Jun 8.32 · Jul 13.07 · Aug 13.84 · Sep 7.56 · Oct 0.02 · Nov -4.84 · Dec -10.21 °C | parent_municipality | 2001-12-31 | 2026-08-06 | stale | verified | [3] | | Average temperature by month | `climate_monthly_mean_c` | Jan 1.15 · Feb 2.39 · Mar 6.74 · Apr 12.91 · May 18.26 · Jun 23.42 · Jul 26.18 · Aug 25.45 · Sep 21.75 · Oct 15.16 · Nov 8.71 · Dec 3.8 °C | parent_municipality | 2001-12-31 | 2026-08-06 | stale | verified | [3] | | Average precipitation by month | `climate_monthly_precip_mm` | Jan 78.23 · Feb 73.41 · Mar 102.6 · Apr 85.85 · May 113 · Jun 123.2 · Jul 126 · Aug 105.7 · Sep 111 · Oct 95.25 · Nov 79.5 · Dec 95.25 mm | parent_municipality | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | G04 Air Quality Pm25 Max Ug M3 | `g04_air_quality_pm25_max_ug_m3` | 18.9 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [2] | | G04 Air Quality Pm25 Mean Annual Ug M3 | `g04_air_quality_pm25_mean_annual_ug_m3` | 6.54 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [2] | | Airport Direct Destinations Count | `airport_direct_destinations_count` | 91 count | city | 2026-08-03 | 2026-08-03 | fresh | verified | [5] | | Nearest Major Airport Distance Km | `nearest_major_airport_distance_km` | 29 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [6] | | Nearest Major Airport Iata | `nearest_major_airport_iata` | DCA | city | 2026-08-03 | 2026-08-03 | fresh | verified | [6] | Every row keeps the value, unit, geographic scope, observation date, verification date and the numbered source below. A missing metric means the city does not publish it; nothing is imputed. ## Language courses and integration - [Adult Education and English Language Acquisition (AEFLA)](https://www.ed.gov/adult-programs) — State Language Course · U.S. Department of Education · English · checked 2026-08-10 - [USCIS English and citizenship class finder](https://my.uscis.gov/) — Civic Orientation · U.S. Citizenship and Immigration Services · English · checked 2026-08-10 These are country-level programmes, not proof of a course location in this city. ## Public employment service - [American Job Centers](https://www.usa.gov/job-help) — Job Search This is a country-level service, not proof of a physical office in this city. ## Healthcare access Migrants can receive medical care in Saint Charles when the country-wide insurance or residence conditions are met. City capacity facts do not determine personal eligibility. - Public healthcare access for foreign residents: no — [official source](https://www.healthcare.gov/immigrants/) ## Country-wide rules Visa, benefit, tax and healthcare eligibility rules are published on the [United States country page](https://immigrationdb.com/countries/united-states/). ## Relationship to a nearby hub ### Is Saint Charles part of Washington, D.C.? Saint Charles is near Washington, D.C., but the collected evidence does not establish that it is administratively part of the hub or an official satellite. It is about 33.5 km away by straight-line distance. - Source: https://download.geonames.org/export/dump/cities5000.zip ## Sources 1. Census Reporter (underlying U.S. Census ACS) — Official source — https://api.censusreporter.org/1.0/data/show/latest?table_ids=B05012%2CB23025&geo_ids=16000US2475025%2C16000US2475725%2C16000US2475810%2C16000US2477100%2C16000US2478050%2C16000US2478425%2C16000US2478650%2C16000US2479900%2C16000US2481175%2C16000US2481250 2. US EPA Air Quality System (AQS) — Official source — https://aqs.epa.gov/aqsweb/airdata/annual_conc_by_monitor_2024.zip 3. NASA POWER / NASA Langley Research Center — Official source — https://power.larc.nasa.gov/api/temporal/climatology/point?parameters=T2M%2CT2M_MAX%2CT2M_MIN&community=SB&longitude=-76.939140&latitude=38.624560&format=JSON 4. NOAA National Centers for Environmental Information — Official source — https://www.ncei.noaa.gov/data/normals-monthly/1991-2020/archive/us-climate-normals_1991-2020_v1.0.1_monthly_multivariate_by-station_c20230404.tar.gz 5. OpenFlights — Official source — https://raw.githubusercontent.com/jpatokal/openflights/master/data/routes.dat 6. OurAirports — Official source — https://davidmegginson.github.io/ourairports-data/airports.csv ## Cite This citation identifies the ImmigrationDB compilation/page. Underlying source publishers and datasets retain their own terms; inspect the Sources section and cite those records separately. ### APA ImmigrationDB. (2026, September 14). Saint Charles, United States: jobs, air quality, climate [ImmigrationDB compilation; snapshot approved-static-c751ebb1b4085a62; version approved-static-c751ebb1b4085a62]. ImmigrationDB. https://immigrationdb.com/cities/us/saint-charles/ Retrieved 2026-09-14. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ ### BibTeX ```bibtex @misc{immigrationdb_immigrationdb_saint-charles-united-states-jobs-air-quality-climate_a6812d493176, author = {ImmigrationDB}, title = {Saint Charles, United States: jobs, air quality, climate}, publisher = {ImmigrationDB}, year = {2026}, date = {2026-09-14}, version = {approved-static-c751ebb1b4085a62}, snapshot = {approved-static-c751ebb1b4085a62}, url = {https://immigrationdb.com/cities/us/saint-charles/}, note = {Retrieved 2026-09-14. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/}, } ``` ### Markdown [Saint Charles, United States: jobs, air quality, climate](https://immigrationdb.com/cities/us/saint-charles/) — ImmigrationDB; ImmigrationDB; snapshot approved-static-c751ebb1b4085a62; version approved-static-c751ebb1b4085a62; retrieved 2026-09-14; built 2026-09-14. - Citation schema: `immigrationdb-citation-v1` - Canonical URL: https://immigrationdb.com/cities/us/saint-charles/ - Title: Saint Charles, United States: jobs, air quality, climate - Author: ImmigrationDB - Publisher: ImmigrationDB - Snapshot: `approved-static-c751ebb1b4085a62` - Version: `approved-static-c751ebb1b4085a62` - Retrieved: 2026-09-14 - Built: 2026-09-14 - Compilation license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) ## Data - HTML: https://immigrationdb.com/cities/us/saint-charles/ - JSON: https://immigrationdb.com/data/cities/us/saint-charles.json - Markdown: https://immigrationdb.com/data/cities/us/saint-charles.md - MCP resource: immigrationdb://city/us/saint-charles - Metric dictionary: https://immigrationdb.com/data/metrics.json - City shard index: https://immigrationdb.com/data/cities/index.json - Release catalog: https://immigrationdb.com/data/catalog.json