Excessive Heat Watch 8:00 PM

Ottawa, Canada

Last updated: 3:43 PM CDT  ·  Refresh
23°C
Feels like 22°
Mostly Clear
▲ 24°  /  ▼ 11°
Wind
8 mph NNW
Humidity
56%
Dew Point
13°
Pressure
29.81 inHg
Visibility
10 mi
UV Index
6.7
Cloud Cover
12%
Sunrise
6:01 AM
Sunset
8:10 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Ottawa is currently mostly clear at 23°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:01AM · Sunset: 8:10PM.

Alerts

Excessive Heat Watch
Expires 8:00 PM
34 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
28%
5 PM
24°
5%
6 PM
23°
5%
7 PM
21°
3%
8 PM
19°
17%
9 PM
18°
3%
10 PM
17°
3%
11 PM
16°
3%
12 AM
15°
3%
1 AM
14°
3%
2 AM
13°
3%
3 AM
13°
3%
4 AM
12°
3%
5 AM
11°
3%
6 AM
12°
3%
7 AM
13°
3%
8 AM
14°
3%
9 AM
18°
3%
10 AM
19°
3%
11 AM
21°
3%
12 PM
21°
3%
1 PM
21°
3%
2 PM
21°
3%
3 PM
22°
3%
7-Day Forecast
Today
24° 11°
Clear with a 28% chance of rain.
Sat
24° 11°
Mostly Clear.
Sun
24° 11°
Rain, 66% chance.
Mon
25° 16°
Heavy Rain, 74% chance.
Tue
27° 14°
Clear.
Wed
26° 14°
Rain, 81% chance.
Thu
23° 10°
Clear with a 60% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Clear 28% 8 mph NNW 56%
5 PM 24° Mostly Clear 5% 8 mph NNW 59%
6 PM 23° Clear 5% 7 mph NNW 64%
7 PM 21° Clear 3% 6 mph NNW 70%
8 PM 19° Clear 17% 5 mph NW 73%
9 PM 18° Clear 3% 4 mph NNW 75%
10 PM 17° Clear 3% 4 mph NW 76%
11 PM 16° Clear 3% 4 mph NW 76%
12 AM 15° Clear 3% 4 mph NNW 77%
1 AM 14° Clear 3% 4 mph NNW 78%
2 AM 13° Clear 3% 4 mph NNW 79%
3 AM 13° Clear 3% 4 mph NNW 81%
4 AM 12° Mostly Clear 3% 3 mph NNW 82%
5 AM 11° Mostly Clear 3% 3 mph NNW 82%
6 AM 12° Mostly Clear 3% 3 mph N 80%
7 AM 13° Mostly Clear 3% 3 mph N 77%
8 AM 14° Mostly Clear 3% 3 mph N 72%
9 AM 18° Mostly Clear 3% 4 mph N 67%
10 AM 19° Mostly Clear 3% 4 mph N 61%
11 AM 21° Mostly Clear 3% 4 mph NNW 59%
12 PM 21° Mostly Clear 3% 4 mph NNW 58%
1 PM 21° Partly Cloudy 3% 5 mph NW 56%
2 PM 21° Partly Cloudy 3% 4 mph NW 56%
3 PM 22° Partly Cloudy 3% 4 mph NW 56%
15-Day Forecast
Today
8/14
Clear
28%
11°
24°
Sat
8/15
Mostly Clear
3%
11°
24°
Sun
8/16
Rain
66%
11°
24°
Mon
8/17
Heavy Rain
74%
16°
25°
Tue
8/18
Clear
19%
14°
27°
Wed
8/19
Rain
81%
14°
26°
Thu
8/20
Clear
60%
10°
23°
Fri
8/21
Clear
60%
9°
23°
Sat
8/22
Drizzle
60%
11°
26°
Sun
8/23
Drizzle
60%
13°
27°
Mon
8/24
Drizzle
60%
14°
26°
Tue
8/25
Drizzle
60%
13°
26°
Wed
8/26
Drizzle
60%
13°
25°
Thu
8/27
Drizzle
60%
12°
24°
Fri
8/28
Drizzle
60%
11°
23°
34
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
34 AQI 6.2 µg/m³
O3
Ground-level ozone
17 AQI 18 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 34 Good 17 34
Sun 28 Good 22 28
Mon 23 Good 20 23
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 Fri Aug 14, 19:00'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
SBCAPE283 J/kg
MLCAPE194 J/kg
MUCAPE283 J/kg
SBCIN-6 J/kg
MLCIN-8 J/kg
Lifted Index-1.0
Kinematics
0–6 km Shear24 kt
0–1 km Shear5 kt
Eff. Shear16 kt
0–1 km SRH17
0–3 km SRH49
Eff. SRH49
Storm Motion11° @ 21 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.4
Thermo & Levels
PWAT1.03 in
0–3 km LR7.8 °C/km
700–500 LR5.8 °C/km
Total Totals48.5
LCL872 hPa
LFC862 hPa
EL460 hPa
Freezing Lvl9,705 ft