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JPL Close Approach vs USGS Earthquake Hazards Program

Same instrument, two spec sheets — measured, not claimed.

APIJPL Close ApproachNEW—USGS Earthquake Hazards ProgramNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedPublic domain (U.S. Government work)
Free tierFree — limits not publishedFree — no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

JPL Close Approach vs USGS Earthquake Hazards Program: common questions

Which is more reliable, JPL Close Approach or USGS Earthquake Hazards Program?

On our scheduled checks, USGS Earthquake Hazards Program leads on measured uptime — JPL Close Approach at —% versus USGS Earthquake Hazards Program at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do JPL Close Approach and USGS Earthquake Hazards Program need an API key?

Neither needs a paid key — JPL Close Approach is callable with no signup, and USGS Earthquake Hazards Program is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call JPL Close Approach and USGS Earthquake Hazards Program from the browser?

Only USGS Earthquake Hazards Program is browser-friendly — it returns CORS headers over HTTPS. JPL Close Approach needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are JPL Close Approach and USGS Earthquake Hazards Program free for commercial use?

JPL Close Approach has unclear commercial terms, and USGS Earthquake Hazards Program allows commercial use on its free tier. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.