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Ottawa, Canada

Last updated: 2:37 PM CDT  ·  Refresh
24°C
Feels like 23°
Mostly Clear
▲ 24°  /  ▼ 13°
Wind
9 mph WNW
Humidity
60%
Dew Point
15°
Pressure
29.59 inHg
Visibility
10 mi
UV Index
7.8
Cloud Cover
17%
Sunrise
6:00 AM
Sunset
8:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Ottawa is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 805 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 8:12PM.

28 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
10%
4 PM
24°
5%
5 PM
24°
5%
6 PM
23°
3%
7 PM
22°
3%
8 PM
21°
3%
9 PM
19°
3%
10 PM
18°
3%
11 PM
17°
3%
12 AM
17°
3%
1 AM
16°
3%
2 AM
15°
3%
3 AM
14°
3%
4 AM
14°
3%
5 AM
13°
5%
6 AM
13°
5%
7 AM
14°
5%
8 AM
16°
5%
9 AM
17°
5%
10 AM
19°
5%
11 AM
20°
5%
12 PM
21°
5%
1 PM
21°
5%
2 PM
21°
6%
7-Day Forecast
Today
24° 13°
Mostly Clear.
Fri
23° 13°
Mostly Clear.
Sat
24° 11°
Mostly Clear.
Sun
22°
Rain, 82% chance.
Mon
25° 12°
Clear.
Tue
27° 12°
Drizzle, 81% chance.
Wed
24° 13°
Rain, 81% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 10% 9 mph WNW 60%
4 PM 24° Mostly Clear 5% 10 mph WNW 57%
5 PM 24° Mostly Clear 5% 9 mph WNW 60%
6 PM 23° Mostly Clear 3% 7 mph NW 66%
7 PM 22° Mostly Clear 3% 5 mph NW 72%
8 PM 21° Mostly Clear 3% 4 mph NW 76%
9 PM 19° Mostly Clear 3% 4 mph NNW 78%
10 PM 18° Mostly Clear 3% 3 mph NNW 81%
11 PM 17° Mostly Clear 3% 3 mph NW 82%
12 AM 17° Mostly Clear 3% 4 mph NW 82%
1 AM 16° Clear 3% 4 mph NW 83%
2 AM 15° Clear 3% 4 mph NW 83%
3 AM 14° Clear 3% 4 mph NW 83%
4 AM 14° Clear 3% 4 mph NNW 83%
5 AM 13° Mostly Clear 5% 4 mph NW 82%
6 AM 13° Mostly Clear 5% 4 mph NW 82%
7 AM 14° Mostly Clear 5% 4 mph NW 80%
8 AM 16° Mostly Clear 5% 4 mph NW 75%
9 AM 17° Mostly Clear 5% 5 mph NW 68%
10 AM 19° Clear 5% 6 mph NNW 62%
11 AM 20° Clear 5% 7 mph NW 59%
12 PM 21° Mostly Clear 5% 7 mph NW 58%
1 PM 21° Mostly Clear 5% 7 mph NW 57%
2 PM 21° Mostly Clear 6% 7 mph NW 57%
15-Day Forecast
Today
8/13
Mostly Clear
10%
13°
24°
Fri
8/14
Mostly Clear
7%
13°
23°
Sat
8/15
Mostly Clear
8%
11°
24°
Sun
8/16
Rain
82%
22°
Mon
8/17
Clear
9%
12°
25°
Tue
8/18
Drizzle
81%
12°
27°
Wed
8/19
Rain
81%
13°
24°
Thu
8/20
Drizzle
50%
11°
25°
Fri
8/21
Drizzle
60%
10°
28°
Sat
8/22
Drizzle
60%
11°
25°
Sun
8/23
Drizzle
60%
13°
25°
Mon
8/24
Drizzle
60%
12°
24°
Tue
8/25
Drizzle
60%
11°
25°
Wed
8/26
Drizzle
60%
12°
23°
Thu
8/27
Drizzle
60%
11°
25°
28
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
28 AQI 5.1 µg/m³
O3
Ground-level ozone
19 AQI 22 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Fri 28 Good 19 28
Sat 24 Good 19 24
Sun 28 Good 19 28
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 Thu Aug 13, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1065 J/kg
MLCAPE738 J/kg
MUCAPE1065 J/kg
SBCIN-4 J/kg
MLCIN0 J/kg
Lifted Index-4.7
Kinematics
0–6 km Shear39 kt
0–1 km Shear7 kt
Eff. Shear27 kt
0–1 km SRH29
0–3 km SRH60
Eff. SRH60
Storm Motion317° @ 29 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.1
STP (eff)0.1
Supercell0.9
K-Index31.0
Thermo & Levels
PWAT1.08 in
0–3 km LR8.2 °C/km
700–500 LR6.2 °C/km
Total Totals51.6
LCL877 hPa
LFC871 hPa
EL300 hPa
Freezing Lvl9,633 ft