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Ottawa, Canada

Last updated: 5:22 PM CDT  ·  Refresh
22°C
Feels like 23°
Partly Cloudy
▲ 24°  /  ▼ 16°
Wind
3 mph WSW
Humidity
73%
Dew Point
16°
Pressure
29.50 inHg
Visibility
10 mi
UV Index
3.7
Cloud Cover
56%
Sunrise
5:59 AM
Sunset
8:14 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Ottawa is currently partly cloudy at 22°C. Precipitation is likely — peak probability 87% around 6 PM. Atmospheric instability is elevated (CAPE up to 1386 J/kg) — isolated convective development possible. Sunrise: 5:59AM · Sunset: 8:14PM.

31 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
87%
7 PM
22°
61%
8 PM
21°
65%
9 PM
20°
65%
10 PM
19°
76%
11 PM
18°
54%
12 AM
18°
47%
1 AM
18°
60%
2 AM
18°
30%
3 AM
18°
59%
4 AM
17°
46%
5 AM
16°
35%
6 AM
16°
35%
7 AM
16°
23%
8 AM
17°
23%
9 AM
19°
25%
10 AM
21°
26%
11 AM
21°
32%
12 PM
22°
40%
1 PM
24°
40%
2 PM
24°
40%
3 PM
24°
40%
4 PM
24°
41%
5 PM
23°
41%
7-Day Forecast
Tonight
24° 16°
Partly Cloudy with a 87% chance of rain.
Thu
26° 14°
Partly Cloudy with a 59% chance of rain.
Fri
23° 13°
Mostly Clear with a 31% chance of rain.
Sat
23° 12°
Mostly Clear.
Sun
22° 13°
Partly Cloudy with a 25% chance of rain.
Mon
24° 13°
Partly Cloudy with a 41% chance of rain.
Tue
26° 12°
Clear with a 43% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 22° Partly Cloudy 87% 3 mph WSW 73%
7 PM 22° Partly Cloudy 61% 3 mph SW 80%
8 PM 21° Partly Cloudy 65% 3 mph SE 86%
9 PM 20° Partly Cloudy 65% 4 mph NNE 91%
10 PM 19° Partly Cloudy 76% 3 mph E 95%
11 PM 18° Mostly Cloudy 54% 3 mph ESE 97%
12 AM 18° Rain 47% 3 mph NNW 97%
1 AM 18° Overcast 60% 3 mph NNW 97%
2 AM 18° Overcast 30% 3 mph NNW 97%
3 AM 18° Mostly Cloudy 59% 3 mph WNW 97%
4 AM 17° Mostly Cloudy 46% 3 mph WNW 97%
5 AM 16° Mostly Cloudy 35% 3 mph W 96%
6 AM 16° Fog 35% 2 mph WNW 96%
7 AM 16° Fog 23% 3 mph WNW 95%
8 AM 17° Partly Cloudy 23% 4 mph NW 93%
9 AM 19° Partly Cloudy 25% 4 mph NW 88%
10 AM 21° Partly Cloudy 26% 5 mph WNW 84%
11 AM 21° Mostly Clear 32% 6 mph WNW 78%
12 PM 22° Partly Cloudy 40% 7 mph WNW 71%
1 PM 24° Partly Cloudy 40% 8 mph WNW 65%
2 PM 24° Partly Cloudy 40% 8 mph WNW 62%
3 PM 24° Partly Cloudy 40% 8 mph WNW 61%
4 PM 24° Partly Cloudy 41% 8 mph WNW 61%
5 PM 23° Partly Cloudy 41% 7 mph WNW 62%
15-Day Forecast
Today
8/12
Partly Cloudy
87%
16°
24°
Thu
8/13
Partly Cloudy
59%
14°
26°
Fri
8/14
Mostly Clear
31%
13°
23°
Sat
8/15
Mostly Clear
15%
12°
23°
Sun
8/16
Partly Cloudy
25%
13°
22°
Mon
8/17
Partly Cloudy
41%
13°
24°
Tue
8/18
Clear
43%
12°
26°
Wed
8/19
Drizzle
60%
13°
24°
Thu
8/20
Drizzle
68%
12°
24°
Fri
8/21
Drizzle
68%
12°
24°
Sat
8/22
Drizzle
64%
13°
24°
Sun
8/23
Drizzle
60%
11°
23°
Mon
8/24
Drizzle
60%
11°
22°
Tue
8/25
Drizzle
60%
10°
23°
Wed
8/26
Drizzle
60%
11°
23°
31
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
31 AQI 5.6 µg/m³
O3
Ground-level ozone
22 AQI 24 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 31 Good 22 31
Fri 24 Good 20 24
Sat 21 Good 17 21
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 Wed Aug 12, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 100 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1043 J/kg
MLCAPE702 J/kg
MUCAPE1115 J/kg
SBCIN-79 J/kg
MLCIN0 J/kg
Lifted Index-3.8
Kinematics
0–6 km Shear38 kt
0–1 km Shear11 kt
Eff. Shear33 kt
0–1 km SRH65
0–3 km SRH85
Eff. SRH85
Storm Motion312° @ 26 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.3
STP (eff)0.2
Supercell1.6
K-Index29.9
Thermo & Levels
PWAT1.15 in
0–3 km LR7.3 °C/km
700–500 LR6.0 °C/km
Total Totals49.9
LCL918 hPa
LFC829 hPa
EL271 hPa
Freezing Lvl10,023 ft