1 emergency department · ON · Live as of 3:45 a.m. EDT
Predicted average ER wait across Sarnia over the next 12 hours, based on ERstat’s model. Use it to time a non-urgent visit for a quieter window.
Sarnia ER Forecast — Next 12 Hours
Projected from typical wait patterns across Sarnia ERs and the current average wait.
Based on historical wait patterns across Sarnia emergency departments, here is when they tend to be quietest and busiest. Waits are typically longest in the early morning and shortest around midday.
Petrolia · 23 km away
Wallaceburg · 42 km away
Sarnia has 1 emergency department — 1 open 24 hours a day, 7 days a week. 1 of 1 currently has live wait time data. Right now, 1 person is waiting across Sarnia emergency departments.
Wait time data for Sarnia is sourced from individual hospital websites and updates as frequently as every 15–30 minutes. ERstat displays the estimated time from triage registration to being seen by a physician.
All emergency departments in Sarnia use the Canadian Triage and Acuity Scale (CTAS) to prioritize patients. Patients with more serious conditions are always seen first, regardless of arrival time or displayed wait. A shorter posted wait does not guarantee a shorter visit — it depends on the severity of your condition relative to other patients in the department.
Check wait times on this page before leaving. ERstat updates every 5 minutes and shows all Sarnia ERs sorted from shortest to longest wait. Each hospital page includes a 12-hour forecast chart and a “Best Time to Visit” pattern based on historical data.
If your condition is not life-threatening, consider whether a walk-in clinic, urgent care centre, or pharmacist could help instead. Ontario pharmacists can assess and prescribe for many common conditions with no appointment needed. See what your pharmacist can treat →
Not sure if you need the ER? Call 811 to speak with a registered nurse. Free, confidential, available 24/7.
If you are experiencing a medical emergency — chest pain, difficulty breathing, stroke symptoms, severe bleeding, or loss of consciousness — call 911 immediately.
Not an emergency? 7 walk-in clinics in Sarnia — hours & walk-in status
Work at an ER? Report your wait times — free, takes 30 seconds.
Hospital administrator? Manage your ER listing on ERstat.