ER Compass
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St. Mary's General Hospital

Kitchener, ON · Hospital website ↗
Open 24/7☎ (519) 744-3311
4h 30m
current emergency wait
Medium confidence, scraped from the hospital's public page, updated 7 min ago
Posted by the hospital · 2026-10-27T12:29:44.4750086Z
vs its typical now
+1h 12m
usually about 3h 18m at this hour
Ontario rank
#40 / 52
among ERs reporting now, shortest first
calmest hour
9am
typically 3h 23m
Busier than usual for this time of day (~90th percentile of this ER's own posted-wait history at this hour, based on 293 past readings)
Long wait posted here right now — a nearby ER may be seen sooner ↓
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Patients waiting
28
In the ED now
42
Weather now
1°C
Air quality (AQHI)
1

When this ER is busiest

Based on our archive, this emergency room is typically busiest around 12am and quietest around 9am.

3h4h5h6h7hcalmest
12a6a12p6p11p

Over the last month its posted wait has typically been about 4h 47m, ranging roughly 3h 3m to 8h.

For a non-urgent visit, a calmer hour usually means a shorter wait; in an emergency, go to the nearest ER no matter the time.

Busiest hours, by day
Average emergency wait at St. Mary's General Hospital by day of week and hour of day, in minutes
01234567891011121314151617181920212223
Sun448446418392364311308234222217232237228216211218209207194207278312366400
Mon409384355337312287273238209207214218228232232235255279256283331376423429
Tue416393397345310282266206198204214210224233225243250260254267348396427444
Wed445424410373345307301239198191216219235252233252242250241279342375428438
Thu441421400365308285282223192183206224226231232256240269265285351377409432
Fri431419414370320266263219205213215207216199212217215222224257327370427451
Sat455450432410366321305235216202217219214202203205202201193212272343399441

For a non-urgent visit, a calmer hour usually means a shorter wait; in an emergency, go to the nearest ER no matter the time.

Next 12 hours

The wait is about 4h 30m right now. If this ER follows its usual pattern, expect it to climb toward roughly 5h 33m over the next 12 hours.

A projection from this ER's own history, not a guarantee. Live conditions can change quickly.

How reliable is this number?

Over the last 49.6 h, this ER's posted wait refreshes about every 15 min, has ranged 1h 18m–8h.

Measured from our own archive of what this hospital posted. See how we check accuracy

Getting there

Logistics from OpenStreetMap, to help plan your arrival, not medical guidance. In an emergency, go straight to the nearest entrance and ask staff.

Time to be seen (CIHI)

Across Ontario, 9 in 10 patients were seen by a physician within ~4h 30m.

For comparison, the wait this ER has posted runs a median of ~4h 58m over the stretch we've tracked it, the typical live estimate, where the CIHI figure above is the long-wait tail (the slowest 1 in 10).

Province-wide, no hospital-level figure is published for this site. CIHI, fiscal 2024–2025. Source ↗

If you're admitted (CIHI)

Across Ontario, 9 in 10 admitted patients spent under ~44h 24m in the ED waiting for an inpatient bed.

Most ER visits end in discharge and are far shorter, this is the admitted-patient (boarding) figure. Province-wide, no hospital-level figure for this site. CIHI, fiscal 2024–2025. Source ↗

Typical in Ontario (CIHI)

half of discharged ED visits finish within ~2.3–3.7 h; 9 in 10 within ~8.3 h.

Province-wide total time in the ED (arrival to leaving), Apr–Sep 2025, a ballpark where there's no live wait, not this hospital's posted number.

Nearby emergency rooms

Grand River Hospital
Kitchener · 2 km away
11h 27m
Cambridge Memorial Hospital
Cambridge · 15 km away
3h 59m
Guelph General Hospital
Guelph · 24 km away
—
Groves Memorial Community Hospital
Fergus · 31 km away
—
Brantford General Hospital
Brantford · 38 km away
10h 49m
Stratford General Hospital
Stratford · 41 km away
—

Frequently asked questions

How long is the ER wait at St. Mary's General Hospital right now?
As of the latest update, about 4h 30m to be seen at St. Mary's General Hospital. The figure refreshes roughly every 10 minutes and is the hospital's own live estimate, not a guarantee: an emergency room always treats the sickest patients first, so your own wait can differ.
What does the wait time actually measure?
Usually the estimated time to be seen by a physician, but Canada has no common definition. Quebec publishes stretcher occupancy, New Brunswick length of stay, and others an estimate of the wait to be seen, so we keep each province in its own units and never blend them into one misleading number.
How accurate are these ER wait times?
They are the live estimates each hospital publishes, refreshed about every 10 minutes; we stamp every reading with the moment the hospital said it was current and flag a feed that goes stale. They are estimates, not guarantees, an emergency room always sees the sickest patients first, so your own wait can differ. We also backtest our forecasts against what hospitals post next; see the accuracy page.
Should I go to the ER, or somewhere else?
For anything life-threatening, call 911 or go to the nearest emergency room now, never wait for a shorter posted time. For a non-urgent problem, calling 811 (free 24/7 health advice), a walk-in clinic, or a pharmacist is often faster. When in doubt, get checked.

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