Si is down? Current uptime and performance status in dec 2025

Health Metrics in last 24 hours

100 %

Availability

0.36 s

Response Time

0 s

Down time

Performance Metrics in last 24 hours

3.94 s

Speed Index

67 / 100

Perf. Score

92 / 100

SEO Score

77 / 100

PWA Score

96 / 100

Accessibility

UX Metrics

Information not available

SSL Certificate Details checked 2 days ago

Validity

Valid

Expiry

69 days

Valid till

Fri Feb 20 2026

Domains

DNS:www.si.edu

Issued for

Smithsonian Institution, Washington, District of Columbia, US

Issued by

Let's Encrypt, US

Si has uptime of 100 % with 0 incidents in the last 24 hours. The performance score is 67 along with speed index of 3.94 seconds. Si has SEO score of 92 and PWA score of 77. Si certificate is good and will expire in 69 days. Realtime Performance and uptime status contains uptime monitoring metrics, performance monitoring, chrome ux metrics, global uptime and SSL certificate details.