CheckUpstream measured CircleCI at 99.929% availability across 2828 independent checks (global · api). 43 incidents were recorded in the past 12 months; the most recent resolved 5 days ago after 27 minutes. Status signals are polled from CircleCI's official Atlassian Statuspage status page, alongside independent probes and community reports.
Share of our own checks against CircleCI endpoints that returned CircleCI's expected response. Evidence that their API edge is answering correctly — not that every product behind it works.
Vendor disclosed: 40 incidents · 358 of 365 days with none posted · 13h 17m of declared impact
Fewer incidents in the last 30 days than 12% of 232 tracked services.
Share of each window with no impact declared by CircleCI
7d
99.920%
30d
99.455%
90d
99.818%
180d
99.692%
1y
99.848%
Downtime like this can be refundable
If you're a paying CircleCI customer, outages in these windows may count against CircleCI's SLA — vendors owe service credits for missed uptime targets, but only if you file inside the deadline. CheckUpstream tracks the entitlement, drafts the claim, and hands you the filing link.
A CircleCI outage only matters if something you ship depends on it. Point us at a public repository and we will read its dependencies and tell you — no account, nothing stored.
Time to resolve, from CircleCI's own incident posts (1 year)
Median time to resolve
1h 28m
Slowest 10% take longer than
6h 42m
From 40 incidents CircleCI published and resolved in the last 1 year, measured between their own start and resolution times. It describes how long CircleCI takes to close an incident they have acknowledged — not how often they have them, and not how available they were.
GitHub READMEs, GitLab, MDX docs — links to the live reliability page.
Frequently Asked Questions
›Is CircleCI currently down?
CircleCI is currently Operational. CheckUpstream tracks CircleCI in real-time across the official status page, RSS / Atom feeds, and community telemetry. Refresh this page for the latest reading.
›When did CircleCI last have an outage?
CircleCI's last resolved incident started 5 days ago and lasted 26 minutes (degraded performance).
CircleCI's 30-day measured availability is 99.929%, from CheckUpstream's own probes against CircleCI endpoints. It is the share of checks that returned the expected response, not a figure taken from CircleCI's status page.
›How do I monitor CircleCI in production?
Sign up to CheckUpstream and add CircleCI to a watchlist. We send incident alerts via Slack, email, webhook, or PagerDuty within seconds of detection, covering both the official status page and community signals (HN, Reddit, Bluesky, Cloudflare Radar).
›How does CheckUpstream track CircleCI?
We poll CircleCI's official status page on a 1-5 minute cadence, parse its RSS / Atom feed as a fallback, ingest community signals from social platforms, and aggregate per-org SDK telemetry. Multiple sources reduce false positives versus any single feed alone.