https://freeapis.akclnt.com/api/pm2-5-open-data-portal/history/ Status-change alerts for PM2.5 Open Data Portal: an item appears the week it goes down, recovers, or changes state in the AKCLNT Free APIs weekly verification. Quiet otherwise. Fri, 23 Oct 2026 08:59:47 GMT https://freeapis.akclnt.com/api/pm2-5-open-data-portal/history/watch-pm2-5-open-data-portal-nowFri, 23 Oct 2026 07:00:00 GMTLatest verified status of PM2.5 Open Data Portal from AKCLNT Free APIs (checked 23 Oct 2026). This item updates quietly each week; a brand-new item appears only when the status changes. Listing: https://freeapis.akclnt.com/api/pm2-5-open-data-portal/