City, Helsinki vs EPA
Same instrument, two spec sheets — measured, not claimed.
City, Helsinki vs EPA: common questions
Which is more reliable, City, Helsinki or EPA?
On our scheduled checks, EPA leads on measured uptime — City, Helsinki at 52.9% versus EPA at 54.9% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, City, Helsinki or EPA?
City, Helsinki has the lower median latency in our checks — City, Helsinki responds in 710 ms versus EPA at 3150 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 City, Helsinki and EPA need an API key?
Neither needs a paid key — City, Helsinki is callable with no signup, and EPA is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call City, Helsinki and EPA from the browser?
Only EPA is browser-friendly — it returns CORS headers over HTTPS. City, Helsinki needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are City, Helsinki and EPA free for commercial use?
City, Helsinki has unclear commercial terms, and EPA 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.