National Grid ESO vs Storm Glass Marine Weather
Same instrument, two spec sheets — measured, not claimed.
National Grid ESO vs Storm Glass Marine Weather: common questions
Which is more reliable, National Grid ESO or Storm Glass Marine Weather?
Both are neck-and-neck — National Grid ESO and Storm Glass Marine Weather each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, National Grid ESO or Storm Glass Marine Weather?
Storm Glass Marine Weather has the lower median latency in our checks — National Grid ESO responds in 609 ms versus Storm Glass Marine Weather at 238 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do National Grid ESO and Storm Glass Marine Weather need an API key?
National Grid ESO needs no key, while Storm Glass Marine Weather requires a free API key. If you want to start calling without signup, reach for National Grid ESO first.
Can I call National Grid ESO and Storm Glass Marine Weather from the browser?
Yes — both National Grid ESO and Storm Glass Marine Weather send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are National Grid ESO and Storm Glass Marine Weather free for commercial use?
National Grid ESO has unclear commercial terms, and Storm Glass Marine Weather has unclear commercial terms. 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.