Weather condition

Statewide crash-event circumstances for the rolling 2021-2024 window. The public asset supplies no crash identifier and cannot be joined to the Vehicle asset.

Annual public-use national probability-sample files for eligible police-reported motor-vehicle traffic crashes. Coordinated crash, vehicle, person, event-sequence, related-factor, weather, vPIC-derived, and auxiliary tables are pinned to the 2024 first final release dated 2026-04-01. CRSS is not a census or arbitrary-event lookup; estimates require its survey-design fields.

Annual final national files for every qualifying U.S. fatal motor-vehicle traffic crash, with coordinated crash, vehicle, person, ordered event, circumstance, decoded-vehicle, imputation, and auxiliary tables. Inventory is pinned to 2024 Final and does not claim nonfatal or preliminary coverage.

Integrated daily land-station climate dataset from more than 100,000 stations in 180 countries and territories. It supplies station-day temperature, precipitation, snowfall, snow depth, wind, weather-type, and per-datum attribute fields. NOAA provides station files, an all-stations archive, CDO, and the NCEI Access Data Service. Some non-U.S. WMO-contributed data may have commercial-use or re-export restrictions.

Global hourly and synoptic surface-observation product integrating more than 100 source formats into one ISD schema. It publishes station and observation identifiers, UTC timestamps, coordinates, temperature, wind, gust, precipitation, present-weather, and embedded quality codes through NCEI Access Data Service and bulk Global Hourly files.

Existing daily station-summary Source derived from ISD observations. Preserve its API and bulk-file access, add exact GSOD scalar fields beyond the existing minimum-temperature and precipitation fields, and clarify that wind is emitted in knots rather than converted mph. Some non-U.S. WMO-contributed data may have commercial-use or re-export restrictions.

A separately named Version 2 station summary product publishing hourly, daily, and monthly observations in station-year CSV files and monthly summary forms. It is derived from NCEI station datasets but has its own documented 125-column CSV schema, metric bulk files, U.S.-focused station coverage with limited U.S. Air Force locations abroad, and standing per-station/year plus all-station archive access.

Historical reanalysis API at archive-api.open-meteo.com/v1/archive for arbitrary WGS84 points, multiple coordinates, and ISO dates. It publishes gap-filled, model-assisted—not station-only—hourly weather. Available models include global ERA5 from 1940, ERA5-Land from 1950, and ECMWF IFS from 2017. Paid Professional-or-higher access uses the same syntax on reserved customer endpoints and grants commercial use.

Coordinated collision, vehicle, and casualty record files for police-reported personal-injury collisions on public roads in Great Britain. Pinned to final validated 2025 data published 2026-07-30, with final series 1979-2025 and 2024-specification mappings. Northern Ireland, non-injury/unreported crashes, narratives, and ordered multi-event sequences are excluded.

Free standing account-based query and download channel for CHP-maintained California SWITRS Crash, Party, and Victim data. TIMS supplies the last ten years of final data plus recent provisional data, geocoded coordinates, release-status distinctions, and a complete field codebook. Use is subject to TIMS attribution, disclaimer, litigation-use, and 23 U.S.C. §409 terms; traffic-crash report documents are not included.

Daily crash-grain E-Crash public data for CPD-jurisdiction crashes on Chicago streets. Coverage begins partially in 2015 and is citywide only from September 2017; finalized and amended reports update rows. Officer-recorded conditions are not independently inferred weather.

Commercial global Timeline API for buyer-selected addresses, partial addresses, coordinates, or US ZIP codes and date ranges. It returns historical daily and hourly records in JSON/CSV; paid plans document 50+ years of history, commercial use, downloads, API access, and multi-location request allowances.