Today's Weather Forecast - Ottawa
Today's weather in Ottawa. high 18°C (64°F), low 8°C (46°F). Sunny.
Today’s Hourly Weather Outlook
- Wind speed
- 12 km/h
- Rain probability
- 0%
- Wind speed
- 14 km/h
- Rain probability
- 0%
- Wind speed
- 8 km/h
- Rain probability
- 0%
- Wind speed
- 6 km/h
- Rain probability
- 0%
24-Hour Rain & Temperature Forecast
Sunrise & Sunset
Air Quality Index & Health Advice
Air Quality Index
- Air quality level
- Good
- Dominant pollutant
- Dominant: PM2.5
- Monitoring station
- Ottawa
- PM2.5
- 38μg/m³
- O₃
- 26.4ppb
- NO₂
- 1.8ppb
- SO₂
- 0.2ppb
- CO
- 5ppm
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Ottawa is forecast to reach a high of 18°C today, with an overnight low around 8°C. That's 4° below the long-term average high of 22°C for this time of year. It continues a recent pattern — 7 of the last 28 days with published data have run cooler than normal. Expect little chance of rain (0% probability) and a gentle breeze averaging 14 km/h. Air quality is currently good (AQI 50), with no notable outdoor health concerns.
Today vs Normal
The long-term average high for today is 22°C.
7 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running below normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.