Si is down? Current uptime and performance status in September 2026
https://www.si.eduChecked 29 minutes ago
Si has uptime of 100 % with 0 incidents in the available monitoring period. The performance score is 55 along with speed index of 2.32 seconds. Si has SEO score of 100 and PWA score of 96. Si certificate expires soon and will expire in -30 days. Realtime Performance and uptime status contains uptime monitoring metrics, performance monitoring, chrome ux metrics, global uptime and SSL certificate details.
Health Metrics
Availability
100%
Response time
0.24s
Downtime
-
Performance Metrics
Speed index
2.32
s
Performance
55
/100
SEO
100
/100
PWA
96
/100
Accessibility
100
/100
UX Metrics
No data available
No data available
Locations
No data available
No data available
SSL Certificate Details
Expires soon- Expiry
- -30 days
- Valid till
- Sun Aug 16 2026
- Domains
- DNS:www.si.edu
- Issued for
- Smithsonian Institution, Washington, District of Columbia, US
- Issued by
- Let's Encrypt, US
Performance monitoring simplified
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