Need open data API with daily updates

If you need an open data API with daily updates, here are some good options depending on the type of data you want:

General-purpose open data sources

• data.gov — U.S. government open datasets; many are updated daily or near-daily.
  • https://api.data.gov/
• EU Open Data Portal — European public datasets, some with daily refresh.
  • https://data.europa.eu/en
• World Bank Open Data API — global development indicators; usually not daily for most indicators.
  • https://datahelpdesk.worldbank.org/knowledgebase/topics/125589-developer-information

Daily-updated APIs by category

• Weather
  • Open-Meteo API — free, no key for many uses, updated frequently/daily.
    • https://open-meteo.com/
• Air quality
  • OpenAQ API — open air quality data, updates frequently.
    • https://openaq.org/
• Crypto market data
  • CoinGecko API — free tier, updated very frequently.
    • https://www.coingecko.com/en/api
• Economic / macro data
  • FRED API — U.S. economic data, daily for some series.
    • https://fred.stlouisfed.org/docs/api/fred/
• News / events
  • GDELT — global news and events database, refreshed continuously.
    • https://www.gdeltproject.org/
• Traffic / transport
  • GTFS feeds from transit agencies — often updated daily.
    • https://gtfs.org/

If you want a true “daily update” source

Look for datasets/APIs with:

• a published update frequency of daily
• timestamped records
• an RSS/JSON feed
• a bulk download + incremental updates endpoint

Quick recommendation

If you want something easy and genuinely open:

• Open-Meteo for weather
• OpenAQ for air quality
• GDELT for news/events
• FRED for economic data

If you tell me the data category you need (weather, finance, demographics, transport, etc.), I can recommend the best API with daily updates and sample endpoints.