Excessive Heat Warning — St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM

Ottawa, Canada

Last updated: 6:22 PM CDT  ·  Refresh
21°C
Feels like 22°
Overcast
▲ 22°  /  ▼ 17°
Wind
5 mph N
Humidity
96%
Dew Point
19°
Pressure
29.47 inHg
Visibility
10 mi
UV Index
1.0
Cloud Cover
95%
Sunrise
5:42 AM
Sunset
8:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Ottawa is currently overcast at 20°C. Precipitation is likely — peak probability 82% around 9 PM. Atmospheric instability is elevated (CAPE up to 621 J/kg) — isolated convective development possible. Sunrise: 5:42AM · Sunset: 8:33PM.

Alerts

Excessive Heat Warning
St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
81%
8 PM
22°
82%
9 PM
21°
82%
10 PM
21°
60%
11 PM
21°
59%
12 AM
20°
53%
1 AM
19°
39%
2 AM
19°
30%
3 AM
19°
30%
4 AM
19°
31%
5 AM
17°
32%
6 AM
17°
32%
7 AM
18°
33%
8 AM
19°
36%
9 AM
20°
41%
10 AM
21°
42%
11 AM
22°
42%
12 PM
22°
45%
1 PM
23°
44%
2 PM
24°
45%
3 PM
24°
48%
4 PM
24°
52%
5 PM
26°
43%
6 PM
26°
33%
7-Day Forecast
Tonight
22° 17°
Overcast with a 81% chance of rain.
Thu
26° 17°
Partly Cloudy with a 44% chance of rain.
Fri
29° 16°
Partly Cloudy with a 28% chance of rain.
Sat
27° 18°
Heavy Rain, 84% chance.
Sun
24° 14°
Heavy Rain, 83% chance.
Mon
26° 14°
Clear with a 45% chance of rain.
Tue
29° 14°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 21° Overcast 81% 5 mph N 96%
8 PM 22° Overcast 82% 4 mph NNE 97%
9 PM 21° Overcast 82% 3 mph NNE 97%
10 PM 21° Overcast 60% 3 mph NNE 97%
11 PM 21° Overcast 59% 4 mph NNE 97%
12 AM 20° Mostly Cloudy 53% 4 mph NNE 97%
1 AM 19° Mostly Cloudy 39% 4 mph NNE 96%
2 AM 19° Mostly Cloudy 30% 4 mph NNE 96%
3 AM 19° Mostly Cloudy 30% 4 mph NNE 96%
4 AM 19° Partly Cloudy 31% 4 mph NNE 96%
5 AM 17° Partly Cloudy 32% 4 mph N 96%
6 AM 17° Partly Cloudy 32% 4 mph N 95%
7 AM 18° Partly Cloudy 33% 4 mph N 94%
8 AM 19° Partly Cloudy 36% 4 mph N 91%
9 AM 20° Partly Cloudy 41% 4 mph N 87%
10 AM 21° Partly Cloudy 42% 4 mph N 82%
11 AM 22° Partly Cloudy 42% 5 mph N 79%
12 PM 22° Partly Cloudy 45% 5 mph N 78%
1 PM 23° Partly Cloudy 44% 6 mph N 78%
2 PM 24° Partly Cloudy 45% 6 mph N 78%
3 PM 24° Partly Cloudy 48% 6 mph N 78%
4 PM 24° Partly Cloudy 52% 5 mph NNE 76%
5 PM 26° Mostly Clear 43% 4 mph NNE 77%
6 PM 26° Mostly Clear 33% 3 mph NNE 80%
15-Day Forecast
Today
7/29
Overcast
81%
17°
22°
Thu
7/30
Partly Cloudy
44%
17°
26°
Fri
7/31
Partly Cloudy
28%
16°
29°
Sat
8/1
Heavy Rain
84%
18°
27°
Sun
8/2
Heavy Rain
83%
14°
24°
Mon
8/3
Clear
45%
14°
26°
Tue
8/4
Clear
15%
14°
29°
Wed
8/5
Partly Cloudy
16%
17°
31°
Thu
8/6
Rain
83%
18°
30°
Fri
8/7
Rain
66%
17°
29°
Sat
8/8
Drizzle
45%
16°
28°
Sun
8/9
Drizzle
60%
14°
27°
Mon
8/10
Drizzle
60%
14°
26°
Tue
8/11
Drizzle
60%
13°
24°
Wed
8/12
Drizzle
60%
13°
24°
49
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
49 AQI 8.8 µg/m³
O3
Ground-level ozone
25 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 49 Good 25 49
Fri 42 Good 41 42
Sat 49 Good 36 49
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 Jul 29, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE200 J/kg
MLCAPE175 J/kg
MUCAPE274 J/kg
SBCIN-7 J/kg
MLCIN0 J/kg
Lifted Index-0.4
Kinematics
0–6 km Shear9 kt
0–1 km Shear6 kt
Eff. Shear7 kt
0–1 km SRH-14
0–3 km SRH-22
Eff. SRH-22
Storm Motion319° @ 16 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.0
Thermo & Levels
PWAT1.84 in
0–3 km LR5.6 °C/km
700–500 LR5.1 °C/km
Total Totals44.4
LCL976 hPa
LFC935 hPa
EL407 hPa
Freezing Lvl12,526 ft