--- entity_id: city:us:geonames:5224082 entity_type: city name: Portsmouth country_code: US country: United States slug: portsmouth canonical_url: https://immigrationdb.com/cities/us/portsmouth/ json_url: https://immigrationdb.com/data/cities/us/portsmouth.json markdown_url: https://immigrationdb.com/data/cities/us/portsmouth.md mcp_uri: immigrationdb://city/us/portsmouth snapshot_id: approved-static-8975a8c3d87026ab generated_at: 2026-09-14 last_verified: 2026-09-06 fact_count: 18 language_location_count: 0 employment_location_count: 0 city_intent_block_count: 0 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/portsmouth/ citation_title: "Portsmouth, United States: jobs, safety, air quality" citation_author: ImmigrationDB citation_publisher: ImmigrationDB citation_snapshot_id: approved-static-8975a8c3d87026ab citation_version: approved-static-8975a8c3d87026ab citation_retrieval_date: 2026-09-14 citation_build_date: 2026-09-14 citation_license_url: https://creativecommons.org/licenses/by/4.0/ --- # Portsmouth Portsmouth is a city in the United States, and the figures below are its published values. Annual PM2.5 levels for Portsmouth stood at 5.1 µg/m³ at the end of 2024. ## Climate Monthly mean temperatures were −1°C in January and 23.6°C in July. Portsmouth's monthly precipitation totalled 100.5 mm in January and 74 mm in July. Maximum PM2.5 in Portsmouth reached 21.1 µg/m³ at the end of 2024. ## Mobility Portsmouth's nearest major airport was 8 km away. ## Safety At the end of 2024, the crime rate reached 358.4 incidents per 100,000 residents. ## Facts | Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Safety City Property Crime Count | `safety_city_property_crime_count` | 52 offenses/year | city | 2025-12-31 | 2026-09-05 | aging | verified | [1] | | Unemployment rate | `unemployment_total_percent` | 3.7 % | city | 2024-12-31 | 2026-08-26 | stale | verified | [2] | | PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 5.1 µg/m³ | nearest_station | 2024-12-31 | 2026-08-06 | stale | verified | [3] | | Average daytime high by month | `climate_monthly_high_c` | Jan 3.5 · Feb 4.7 · Mar 8.7 · Apr 14.9 · May 20.5 · Jun 25.4 · Jul 28.7 · Aug 27.9 · Sep 23.8 · Oct 17.7 · Nov 11.8 · Dec 6.3 °C | nearest_station | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | Average night-time low by month | `climate_monthly_low_c` | Jan -5.5 · Feb -4.7 · Mar -1 · Apr 4.2 · May 9.6 · Jun 14.9 · Jul 18.5 · Aug 17.7 · Sep 13.6 · Oct 7.3 · Nov 2.1 · Dec -2.4 °C | nearest_station | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | Average temperature by month | `climate_monthly_mean_c` | Jan -1 · Feb 0 · Mar 3.9 · Apr 9.6 · May 15 · Jun 20.1 · Jul 23.6 · Aug 22.8 · Sep 18.7 · Oct 12.5 · Nov 6.9 · Dec 1.9 °C | nearest_station | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | Average precipitation by month | `climate_monthly_precip_mm` | Jan 100.5 · Feb 87.3 · Mar 124.5 · Apr 109.1 · May 85.6 · Jun 96.7 · Jul 74 · Aug 91.2 · Sep 106 · Oct 106.1 · Nov 108.6 · Dec 118.1 mm | nearest_station | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | G04 Air Quality Pm25 Max Ug M3 | `g04_air_quality_pm25_max_ug_m3` | 21.1 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [3] | | G04 Air Quality Pm25 Mean Annual Ug M3 | `g04_air_quality_pm25_mean_annual_ug_m3` | 5.09 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [3] | | G11 Annual Precipitation Mm | `g11_annual_precipitation_mm` | 1,208 mm | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [5] | | G11 Max Temp C Jul | `g11_max_temp_c_jul` | 28.7 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [6] | | Average annual temperature | `g11_mean_annual_temp_c` | 11.2 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [7] | | G11 Min Temp C Jan | `g11_min_temp_c_jan` | -5.5 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [8] | | Recorded incidents per 100,000 residents | `crime_incidents_per_100k` | 358.4 offences per 100,000 | city | 2024-12-31 | 2026-08-04 | stale | verified | [9] | | Safety City Crime Covered Population | `safety_city_crime_covered_population` | 17,253 people | city | 2025-12-31 | 2026-09-05 | aging | verified | [1] | | Safety City Violent Crime Count | `safety_city_violent_crime_count` | 7 offenses/year | city | 2025-12-31 | 2026-09-05 | aging | verified | [1] | | Nearest Major Airport Distance Km | `nearest_major_airport_distance_km` | 8 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [10] | | Nearest Major Airport Iata | `nearest_major_airport_iata` | NPT | city | 2026-08-03 | 2026-08-03 | fresh | verified | [10] | 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 Portsmouth 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/). ## Sources 1. FBI CIUS Table 8 by City 2025 (CDE offenses-known-to-le-2025.zip) — Official source — https://cde.ucr.cjis.gov/LATEST/s3/signedurl?key=cius%2F2025%2Foffenses-known-to-le-2025.zip 2. api.bls.gov — Official source — https://api.bls.gov/publicAPI/v2/timeseries/data/LAUCS445788000000003?startyear=2024&endyear=2024 3. US EPA Air Quality System (AQS) — Official source — https://aqs.epa.gov/aqsweb/airdata/annual_conc_by_monitor_2024.zip 4. NOAA National Centers for Environmental Information (NCEI) — Official source — https://www.ncei.noaa.gov/data/normals-monthly/1991-2020/ 5. NOAA National Centers for Environmental Information (NCEI) — Official source — https://www.nodc.noaa.gov/archive/arc0216/0253808/1.1/data/0-data/data-composite-primary-parameters/wmo_normals_9120_PRCP.csv 6. NOAA National Centers for Environmental Information (NCEI) — Official source — https://www.nodc.noaa.gov/archive/arc0216/0253808/1.1/data/0-data/data-composite-primary-parameters/wmo_normals_9120_TMAX.csv 7. NOAA National Centers for Environmental Information (NCEI) — Official source — https://www.nodc.noaa.gov/archive/arc0216/0253808/1.1/data/0-data/data-composite-primary-parameters/wmo_normals_9120_TAVG.csv 8. NOAA National Centers for Environmental Information (NCEI) — Official source — https://www.nodc.noaa.gov/archive/arc0216/0253808/1.1/data/0-data/data-composite-primary-parameters/wmo_normals_9120_TMIN.csv 9. FBI Crime Data Explorer / Uniform Crime Reporting — Official source — https://cde.ucr.cjis.gov/LATEST/webapp/#/pages/home 10. 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). Portsmouth, United States: jobs, safety, air quality [ImmigrationDB compilation; snapshot approved-static-8975a8c3d87026ab; version approved-static-8975a8c3d87026ab]. ImmigrationDB. https://immigrationdb.com/cities/us/portsmouth/ Retrieved 2026-09-14. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ ### BibTeX ```bibtex @misc{immigrationdb_immigrationdb_portsmouth-united-states-jobs-safety-air-quality_1c1d0cd3e84f, author = {ImmigrationDB}, title = {Portsmouth, United States: jobs, safety, air quality}, publisher = {ImmigrationDB}, year = {2026}, date = {2026-09-14}, version = {approved-static-8975a8c3d87026ab}, snapshot = {approved-static-8975a8c3d87026ab}, url = {https://immigrationdb.com/cities/us/portsmouth/}, note = {Retrieved 2026-09-14. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/}, } ``` ### Markdown [Portsmouth, United States: jobs, safety, air quality](https://immigrationdb.com/cities/us/portsmouth/) — ImmigrationDB; ImmigrationDB; snapshot approved-static-8975a8c3d87026ab; version approved-static-8975a8c3d87026ab; retrieved 2026-09-14; built 2026-09-14. - Citation schema: `immigrationdb-citation-v1` - Canonical URL: https://immigrationdb.com/cities/us/portsmouth/ - Title: Portsmouth, United States: jobs, safety, air quality - Author: ImmigrationDB - Publisher: ImmigrationDB - Snapshot: `approved-static-8975a8c3d87026ab` - Version: `approved-static-8975a8c3d87026ab` - 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/portsmouth/ - JSON: https://immigrationdb.com/data/cities/us/portsmouth.json - Markdown: https://immigrationdb.com/data/cities/us/portsmouth.md - MCP resource: immigrationdb://city/us/portsmouth - 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