Weather Near Toronto, ON: Current, 10-Day Forecast & More

Toronto has been breathing through a cloth for most of this week. Smoke from ongoing wildfires has pushed the city’s Air Quality Health Index into moderate-risk territory—sometimes among the worst in the world—while the thermometer still reads like early autumn rather than late April. This guide pulls together what’s actually happening outside right now, what the next days look like, and what you should actually do about it.

Today’s High: 19°C · Today’s Low: 6°C · Chance of Rain: 10% P.O.P. · Tomorrow High: 10°C · Air Quality: Check AQHI

The key metrics below come from official sources, each verified at the time of publication.

Is it cold or hot in Toronto right now?

Current temperature and feels-like

If you’re stepping outside in Toronto today, pack a light layer—the thermometer shows 19°C for the high with a low of 6°C overnight. According to Weather Underground, conditions are clear with visibility around 10 miles and humidity at 44%, which puts the feels-like temperature very close to the actual reading.

Hourly forecast overview

The hours ahead hold relatively stable conditions before a cooler push arrives. The rain probability sits at just 10%, so umbrellas aren’t urgent. The next meaningful weather shift comes tomorrow when daytime highs drop to around 10°C.

Precipitation chance

Environment Canada hasn’t issued any precipitation alerts for the immediate period, but the overnight temperature falling to 6°C means radiational cooling will be noticeable. Tomorrow brings a 30% chance of showers according to forecast models, which would be the first meaningful moisture in several days.

Weather in Toronto tomorrow

Daytime conditions

Wednesday’s forecast shows a notable cooldown. Highs settle around 10°C, well below today’s level, under overcast skies that may thicken as the day progresses. According to Weather Underground’s hourly breakdown, the afternoon should see the most cloud cover before any shower activity develops.

Nighttime outlook

Overnight lows will stay in the single digits, and with increased cloud cover, don’t expect the clear skies that helped push tonight’s dew point to 39°F. Any rain that develops will likely persist into the early morning hours Thursday.

Weekend preview

Current models show the cool pattern holding through the end of the week, though confidence on exact weekend temperatures remains moderate. The air quality situation—which has kept AQHI at elevated levels—may improve if the cooler air mass helps scatter particulate matter from the wildfire smoke.

Is Toronto warm in October?

Average temperatures

October in Toronto sits in a transition zone. Data from Weather25 shows average highs around 15°C and average lows near 9°C—comfortable by day, definitely requiring a jacket after sunset. The range of 48°F to 59°F means layering isn’t optional; it’s essential.

Packing tips

For an October visit or move-in, pack a mix of light sweaters and at least one warm layer. Rain gear matters too—October typically sees 3 to 8 rainy days, with rainfall averaging around 88 mm for the month. Sun hours drop to about 8.6 per day, a sharp contrast to the longer days of June and July.

Typical patterns

Fall foliage peaks in mid-to-late October across the Toronto area, and the cooler temperatures make outdoor sightseeing more comfortable than August’s humidity. However, expect less sunshine than you’d get in spring. The city averages about 8.6 sun hours daily in October, well below summer levels but still workable for activities.

How cold does it get in Toronto?

Winter lows

Toronto’s winter bite depends on which cold snap you’re tracking. January and February regularly see overnight lows in the -15°C to -20°C range, with wind chill making it feel colder. The city’s position on Lake Ontario moderates extremes somewhat compared to inland areas like Ottawa, but January highs averaging -3°C still require serious cold-weather gear.

Air quality index

Right now, the AQHI (Air Quality Health Index) is the more immediate temperature-related concern. According to Air Quality Ontario, the current reading of 4 falls within the moderate risk range (4-6). For most people, no changes to outdoor activity are needed at this level unless symptoms like coughing develop.

Is it safe to be outside in Toronto right now?

At AQHI 4 (moderate risk), the general population faces no mandatory activity restrictions. Air Quality Ontario’s health guidance says most people can continue normal outdoor routines unless they develop symptoms like coughing or breathing discomfort during strenuous activity. Those with respiratory conditions should monitor their response and consider scaling back intense exercise outdoors.

When AQHI climbs into the 7-10 range from wildfire smoke—as it did on April 22, 2026—the guidance becomes more restrictive: reduce or reschedule strenuous outdoor activities if you’re in sensitive groups. Keep windows closed and use air purifiers indoors if available. Environment Canada issues special air quality statements when conditions warrant broader public awareness.

Long-range forecasts: Will 2026 be a hot summer in Ontario?

September outlook

September typically brings the first real cooldown to southern Ontario. While late-summer heat can persist into early September, the overall trend moves toward cooler overnight lows and more variable daytime temperatures. Expect highs generally in the high teens to low twenties, with rain frequency increasing from July/August patterns.

2026 forecasts

Long-range seasonal forecasts for 2026 suggest above-normal temperatures for parts of southern Ontario, though exact summer peak forecasts carry inherent uncertainty this far out. The pattern to watch: climate trends continue pointing toward more frequent heat events, but precise monthly breakdowns remain speculative.

30-day trends

Looking 30 days out from late April, the trend shifts toward the cooler, more variable weather that defines late spring in the Great Lakes region. The immediate forecast shows a notable cooldown Wednesday, followed by moderating temperatures into the weekend. Wildfire smoke risk remains present until seasonal patterns shift in late fall.

Is Toronto the gloomiest city in Canada?

Toronto ranks among the least sunny cities in Canada, with October averaging only 8.6 sun hours per day. However, “gloomiest” depends on what metric you’re using. Coastal cities like Vancouver see fewer clear days, while inland cities like Calgary enjoy more sunshine despite colder winters. Toronto’s combination of moderate cloud cover, winter lake-effect periods, and occasional wildfire smoke makes it less sunny than cities like Calgary, but the distinction matters when planning outdoor activities.

The paradox compounds on high-AQHI days: the sky may look clear while air quality remains poor. According to Streets of Toronto’s reporting, Toronto has ranked among the world’s worst air quality this week, and the sunshine ranking data suggests the city competes for the least-sunny title especially during smoke events. The official monitoring stations tell a different story than your eyes on days when fine particulates scatter light without visible haze.

What experts are saying

Treat open food or exposed food that has been left open to the environment—if it has been in contact with wildfire smoke, it needs to be disposed of because it may have been contaminated with toxic carcinogens.

— Streets of Toronto (reporting on guidance from First Onsite disaster recovery)

We’re not going to say we’re safe from this type of event until late in the fall, like October, November.

— Dr. Howard Shapiro, Toronto Associate Medical Officer of Health

The guidance from disaster recovery experts adds a practical layer often missing from air quality reporting. Beyond monitoring numbers, the state of your home matters: smoke residue can settle in cold corners, on electronics, and in HVAC filters. Professionals recommend checking furnace filters every few days during severe smoke events and calling your insurance provider to understand wildfire smoke coverage before problems compound.

For those with air purifiers, now is the time to ensure filters are clean. For those without, sealed windows and closed doors can limit infiltration while avoiding activities that stir particulates back into living spaces.

What’s driving Toronto’s current weather

The contrast in Toronto’s late April couldn’t be sharper: summer-like temperatures hitting 19°C while wildfire smoke blankets the sky and pushes air quality into moderate-risk territory. This isn’t a typical spring setup. Environment Canada has southern Ontario under special air quality statements, a formal acknowledgment that something unusual is happening in the atmosphere above the city.

The smoke originates from wildfires burning across a wider area, with prevailing winds carrying particulates into the Great Lakes basin. According to Air Quality Ontario’s monitoring data, Toronto’s AQHI has fluctuated between 3 (low risk on April 11) and 4 (moderate risk on April 22), showing how quickly conditions can shift with wind direction.

The dew point at 39°F indicates relatively dry air despite the smoke—the particulates are fine enough to remain suspended without significant moisture. That’s actually worse for lungs than visibly hazy conditions, because the particles penetrate deeper when the air feels dry rather than muggy.

The implication: even when Toronto’s sky looks deceptively clear, AQHI monitoring tells the real story about what’s in the air you breathe.

Related reading: 65 Fahrenheit to Celsius: Converter, Formula & Comfort Guide · Places to Visit Toronto – Top Attractions and Itineraries

For those planning further ahead near Toronto, the Toronto 14-day AccuWeather forecast anticipates mixed spring conditions over the next two weeks for residents and visitors.

Frequently asked questions