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Ottawa, Canada

Last updated: 9:49 AM CDT  ·  Refresh
21°C
Feels like 20°
Clear
▲ 26°  /  ▼ 14°
Wind
7 mph WNW
Humidity
61%
Dew Point
13°
Pressure
29.88 inHg
Visibility
10 mi
UV Index
7.4
Cloud Cover
1%
Sunrise
6:30 AM
Sunset
7:28 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Ottawa is currently clear at 21°C. Precipitation is likely — peak probability 53% around 3 AM. Sunrise: 6:30AM · Sunset: 7:28PM.

20 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
3%
11 AM
23°
21%
12 PM
24°
21%
1 PM
25°
14%
2 PM
26°
3%
3 PM
26°
3%
4 PM
25°
3%
5 PM
25°
3%
6 PM
23°
3%
7 PM
22°
3%
8 PM
21°
5%
9 PM
19°
8%
10 PM
18°
8%
11 PM
18°
28%
12 AM
18°
34%
1 AM
17°
38%
2 AM
17°
34%
3 AM
17°
52%
4 AM
17°
43%
5 AM
17°
42%
6 AM
17°
34%
7 AM
17°
27%
8 AM
17°
27%
9 AM
18°
22%
7-Day Forecast
Today
26° 14°
Mostly Clear.
Tue
24° 16°
Mostly Cloudy with a 43% chance of rain.
Wed
24° 15°
Heavy Rain, 90% chance.
Thu
23°
Mostly Cloudy.
Fri
22°
Clear.
Sat
25°
Drizzle, 43% chance.
Sun
26° 12°
Rain, 44% chance.
TimeTempConditionsPrecipWindHumidity
Now 21° Clear 3% 7 mph WNW 61%
11 AM 23° Clear 21% 7 mph WNW 55%
12 PM 24° Clear 21% 8 mph WNW 52%
1 PM 25° Clear 14% 8 mph WNW 48%
2 PM 26° Mostly Clear 3% 8 mph WNW 48%
3 PM 26° Partly Cloudy 3% 7 mph WNW 50%
4 PM 25° Mostly Cloudy 3% 6 mph WNW 52%
5 PM 25° Mostly Cloudy 3% 6 mph W 58%
6 PM 23° Overcast 3% 5 mph W 64%
7 PM 22° Overcast 3% 5 mph WSW 69%
8 PM 21° Overcast 5% 4 mph WSW 70%
9 PM 19° Overcast 8% 5 mph WSW 71%
10 PM 18° Mostly Cloudy 8% 5 mph WSW 72%
11 PM 18° Overcast 28% 4 mph WSW 73%
12 AM 18° Overcast 34% 4 mph WSW 74%
1 AM 17° Mostly Cloudy 38% 4 mph WSW 75%
2 AM 17° Overcast 34% 4 mph W 80%
3 AM 17° Rain 52% 3 mph WNW 86%
4 AM 17° Rain 43% 4 mph NW 91%
5 AM 17° Rain 42% 4 mph NNW 93%
6 AM 17° Rain 34% 4 mph NNW 94%
7 AM 17° Rain 27% 4 mph N 95%
8 AM 17° Rain 27% 4 mph N 92%
9 AM 18° Overcast 22% 3 mph NNE 89%
15-Day Forecast
Today
9/7
Mostly Clear
14%
14°
26°
Tue
9/8
Mostly Cloudy
43%
16°
24°
Wed
9/9
Heavy Rain
90%
15°
24°
Thu
9/10
Mostly Cloudy
7%
23°
Fri
9/11
Clear
3%
22°
Sat
9/12
Drizzle
43%
25°
Sun
9/13
Rain
44%
12°
26°
Mon
9/14
Rain
69%
19°
Tue
9/15
Drizzle
68%
19°
Wed
9/16
Drizzle
51%
20°
Thu
9/17
Drizzle
60%
19°
Fri
9/18
Drizzle
60%
19°
Sat
9/19
Drizzle
60%
19°
Sun
9/20
Drizzle
60%
18°
Mon
9/21
Drizzle
60%
19°
20
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
17 AQI 3.0 µg/m³
O3
Ground-level ozone
Dominant
20 AQI 22 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 20 Good 20 17
Wed 23 Good 22 23
Thu 47 Good 28 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 Mon Sep 7, 13:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE25 J/kg
MLCAPE17 J/kg
MUCAPE25 J/kg
SBCIN-74 J/kg
MLCIN0 J/kg
Lifted Index2.9
Kinematics
0–6 km Shear26 kt
0–1 km Shear9 kt
Eff. Shear
0–1 km SRH31
0–3 km SRH46
Eff. SRH
Storm Motion11° @ 23 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)
Supercell
K-Index-6.4
Thermo & Levels
PWAT0.74 in
0–3 km LR6.1 °C/km
700–500 LR6.2 °C/km
Total Totals40.1
LCL896 hPa
LFC839 hPa
EL756 hPa
Freezing Lvl11,647 ft