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, Central Plaquemines, LA, Central Jefferson, 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: 1:34 AM CDT  ·  Refresh
19°C
Feels like 21°
Partly Cloudy
▲ 24°  /  ▼ 18°
Wind
3 mph ESE
Humidity
96%
Dew Point
18°
Pressure
29.38 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
40%
Sunrise
5:41 AM
Sunset
8:34 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Ottawa is currently partly cloudy at 19°C. Precipitation is likely — peak probability 90% around 10 AM. Atmospheric instability is elevated (CAPE up to 797 J/kg) — isolated convective development possible. Sunrise: 5:41AM · Sunset: 8:34PM.

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, Central Plaquemines, LA, Central Jefferson, 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
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
19°
35%
3 AM
19°
46%
4 AM
19°
52%
5 AM
17°
58%
6 AM
18°
72%
7 AM
18°
72%
8 AM
19°
82%
9 AM
21°
85%
10 AM
21°
90%
11 AM
22°
90%
12 PM
22°
90%
1 PM
23°
90%
2 PM
23°
90%
3 PM
23°
90%
4 PM
23°
90%
5 PM
24°
78%
6 PM
24°
78%
7 PM
23°
79%
8 PM
23°
79%
9 PM
21°
79%
10 PM
21°
76%
11 PM
21°
76%
12 AM
21°
76%
1 AM
20°
76%
7-Day Forecast
Today
24° 18°
Heavy Rain, 90% chance.
Wed
22° 17°
Rain, 90% chance.
Thu
27° 16°
Rain, 52% chance.
Fri
28° 16°
Fog with a 40% chance of rain.
Sat
29° 16°
Drizzle, 51% chance.
Sun
28° 16°
Heavy Rain, 90% chance.
Mon
28° 15°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 19° Partly Cloudy 35% 3 mph ESE 96%
3 AM 19° Mostly Cloudy 46% 3 mph E 96%
4 AM 19° Mostly Cloudy 52% 4 mph ENE 96%
5 AM 17° Mostly Cloudy 58% 4 mph E 96%
6 AM 18° Overcast 72% 4 mph E 96%
7 AM 18° Heavy Rain 72% 4 mph E 96%
8 AM 19° Heavy Rain 82% 5 mph ESE 95%
9 AM 21° Heavy Rain 85% 6 mph ESE 92%
10 AM 21° Heavy Rain 90% 7 mph SE 88%
11 AM 22° Heavy Rain 90% 8 mph SE 86%
12 PM 22° Heavy Rain 90% 9 mph SE 88%
1 PM 23° Heavy Rain 90% 9 mph SE 88%
2 PM 23° Rain 90% 8 mph SE 88%
3 PM 23° Rain 90% 7 mph SE 87%
4 PM 23° Rain 90% 6 mph SE 86%
5 PM 24° Rain 78% 6 mph SE 87%
6 PM 24° Rain 78% 5 mph SE 90%
7 PM 23° Rain 79% 5 mph ESE 93%
8 PM 23° Rain 79% 5 mph ESE 95%
9 PM 21° Overcast 79% 5 mph E 96%
10 PM 21° Haze 76% 5 mph E 96%
11 PM 21° Fog 76% 6 mph E 97%
12 AM 21° Fog 76% 6 mph ENE 97%
1 AM 20° Fog 76% 6 mph ENE 97%
15-Day Forecast
Today
7/28
Heavy Rain
90%
18°
24°
Wed
7/29
Rain
90%
17°
22°
Thu
7/30
Rain
52%
16°
27°
Fri
7/31
Fog
40%
16°
28°
Sat
8/1
Drizzle
51%
16°
29°
Sun
8/2
Heavy Rain
90%
16°
28°
Mon
8/3
Rain
63%
15°
28°
Tue
8/4
Drizzle
42%
14°
29°
Wed
8/5
Drizzle
44%
16°
30°
Thu
8/6
Rain
68%
17°
31°
Fri
8/7
Drizzle
60%
14°
27°
Sat
8/8
Drizzle
60%
14°
26°
Sun
8/9
Drizzle
60%
13°
27°
Mon
8/10
Drizzle
60%
13°
27°
Tue
8/11
Drizzle
60%
13°
27°
55
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
55 AQI 11.2 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 39 55
Wed 53 Moderate 38 53
Thu 47 Good 36 47
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 Tue Jul 28, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE36 J/kg
MLCAPE92 J/kg
MUCAPE297 J/kg
SBCIN-253 J/kg
MLCIN0 J/kg
Lifted Index-0.4
Kinematics
0–6 km Shear17 kt
0–1 km Shear17 kt
Eff. Shear11 kt
0–1 km SRH-2
0–3 km SRH-20
Eff. SRH-22
Storm Motion175° @ 26 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.0
Thermo & Levels
PWAT1.49 in
0–3 km LR4.8 °C/km
700–500 LR6.1 °C/km
Total Totals49.0
LCL979 hPa
LFC672 hPa
EL463 hPa
Freezing Lvl12,169 ft