Ottawa, Canada

Last updated: 5:44 PM CDT  ·  Refresh
25°C
Feels like 27°
Mostly Clear
▲ 27°  /  ▼ 14°
Wind
3 mph SSW
Humidity
63%
Dew Point
15°
Pressure
29.73 inHg
Visibility
10 mi
UV Index
4.6
Cloud Cover
27%
Sunrise
5:16 AM
Sunset
8:55 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Ottawa is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1679 J/kg) — isolated convective development possible. Sunrise: 5:16AM · Sunset: 8:55PM.

Alerts

No active alerts for this location.
32 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
37%
7 PM
26°
29%
8 PM
25°
18%
9 PM
23°
18%
10 PM
22°
18%
11 PM
21°
16%
12 AM
20°
16%
1 AM
19°
8%
2 AM
18°
3%
3 AM
18°
5%
4 AM
17°
5%
5 AM
16°
5%
6 AM
17°
5%
7 AM
18°
5%
8 AM
21°
5%
9 AM
24°
5%
10 AM
26°
5%
11 AM
26°
5%
12 PM
27°
3%
1 PM
29°
6%
2 PM
29°
3%
3 PM
28°
3%
4 PM
28°
3%
5 PM
28°
3%
7-Day Forecast
Tonight
27° 14°
Mostly Clear with a 37% chance of rain.
Sun
30° 16°
Mostly Clear.
Mon
32° 18°
Partly Cloudy.
Tue
30° 19°
Mostly Cloudy with a 67% chance of rain.
Wed
33° 21°
Partly Cloudy with a 52% chance of rain.
Thu
31° 18°
Drizzle, 60% chance.
Fri
30° 16°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 37% 3 mph SSW 63%
7 PM 26° Clear 29% 3 mph SW 74%
8 PM 25° Mostly Clear 18% 3 mph SW 77%
9 PM 23° Mostly Clear 18% 3 mph WSW 79%
10 PM 22° Mostly Clear 18% 2 mph WNW 81%
11 PM 21° Partly Cloudy 16% 2 mph WNW 84%
12 AM 20° Mostly Clear 16% 2 mph NW 87%
1 AM 19° Mostly Clear 8% 2 mph NNW 91%
2 AM 18° Mostly Clear 3% 2 mph NNW 92%
3 AM 18° Mostly Clear 5% 2 mph N 94%
4 AM 17° Mostly Clear 5% 2 mph N 94%
5 AM 16° Mostly Clear 5% 2 mph NNE 93%
6 AM 17° Mostly Clear 5% 2 mph N 90%
7 AM 18° Mostly Clear 5% 1 mph NW 86%
8 AM 21° Mostly Clear 5% 1 mph W 78%
9 AM 24° Mostly Clear 5% 1 mph SW 68%
10 AM 26° Clear 5% 2 mph SW 58%
11 AM 26° Clear 5% 2 mph WSW 53%
12 PM 27° Mostly Clear 3% 2 mph W 51%
1 PM 29° Mostly Clear 6% 3 mph W 49%
2 PM 29° Mostly Clear 3% 3 mph WNW 49%
3 PM 28° Partly Cloudy 3% 3 mph WNW 49%
4 PM 28° Partly Cloudy 3% 3 mph NW 49%
5 PM 28° Partly Cloudy 3% 3 mph NW 52%
15-Day Forecast
Today
6/27
Mostly Clear
37%
14°
27°
Sun
6/28
Mostly Clear
16%
16°
30°
Mon
6/29
Partly Cloudy
8%
18°
32°
Tue
6/30
Mostly Cloudy
67%
19°
30°
Wed
7/1
Partly Cloudy
52%
21°
33°
Thu
7/2
Drizzle
60%
18°
31°
Fri
7/3
Drizzle
60%
16°
30°
Sat
7/4
Drizzle
60%
16°
28°
Sun
7/5
Drizzle
60%
15°
27°
Mon
7/6
Drizzle
60%
15°
28°
Tue
7/7
Drizzle
60%
17°
28°
Wed
7/8
Drizzle
60%
16°
29°
Thu
7/9
Drizzle
60%
16°
28°
Fri
7/10
Drizzle
60%
16°
27°
Sat
7/11
Drizzle
60%
15°
27°
32
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
27 AQI 4.9 µg/m³
O3
Ground-level ozone
Dominant
32 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sun 32 Good 32 27
Mon 29 Good 29 29
Tue 42 Good 42 30
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Jun 27, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1137 J/kg
MLCAPE766 J/kg
MUCAPE1137 J/kg
SBCIN-71 J/kg
MLCIN0 J/kg
Lifted Index-4.5
Kinematics
0–6 km Shear25 kt
0–1 km Shear2 kt
Eff. Shear19 kt
0–1 km SRH-8
0–3 km SRH-40
Eff. SRH-40
Storm Motion228° @ 17 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.8
Thermo & Levels
PWAT1.13 in
0–3 km LR8.2 °C/km
700–500 LR6.2 °C/km
Total Totals54.0
LCL869 hPa
LFC815 hPa
EL268 hPa
Freezing Lvl10,108 ft