Dense Fog Advisory
Ends in 6 h 24 min
When
Until 10 AM EDT this morning.
Where
Hancock, Lucas, Ottawa, Sandusky, Seneca, Wood, and Wyandot Counties.
Issued for this forecast zone · National Weather Service Cleveland OH
What, impacts and precautionsHide details
What
Visibility one quarter mile or less in dense fog.
Impacts
Low visibility could make driving conditions hazardous.
Precautionary actions
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Areas: Lucas; Wood; Ottawa; Sandusky; Hancock; Seneca; Wyandot
See it on weather.gov (opens in a new tab)

Observed 2:55 AM EDT at KDUH

Sylvania, OH weather

Foggy and 41°5°.

Mostly agree

Now 41°5°

Fog

Wind: Calm; Light through 3 PM
Visibility (notable): 0.2 mi0.3 km; Dense fog
Dew point: 41°5°; Comfortable · up to 50°10° by 12 PM
Humidity: 100%; Air 41°5°, dew point 41°5° · fog or dew likely
UV index: 0Low; Moderate 12–5 PM · peak 4
Air quality: 73Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.41 inHg1030 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (41°5° then, 41°5° now)

Good hours for

Fog until 11 AM
Low 44°7° today at 6 AM
Above 50°10° today by 10 AM
High 66°19° today at 3 PM
Fog tomorrow 7–10 AM

TonightNear 46°8° · Partly cloudy
This morningUp to 54°12° by 11 AM · Partly cloudy
This afternoonUp to 66°19° by 3 PM · Partly cloudy
TonightDown to 43°6° by 5 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 69°21° by 3 PM · Mostly cloudy
Tomorrow nightDown to 49°9° by 2 AM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 3a	Fog	47°8° (likely 43°6° to 49°9°)	47°8°	0%	1 mph2 km/h from NE, gusts 7 mph11 km/h	100%	50%	0
Sat 4a	Fog	46°8° (likely 42°6° to 48°9°)	46°8°	0%	1 mph2 km/h from NE, gusts 7 mph11 km/h	100%	54%	0
Sat 5a	Fog	45°7° (likely 43°6° to 48°9°)	45°7°	0%	1 mph2 km/h from NE, gusts 6 mph10 km/h	100%	55%	0
Sat 6a	Fog	44°7° (likely 43°6° to 46°8°)	44°7°	0%	1 mph2 km/h from N, gusts 6 mph10 km/h	100%	57%	0
Sat 7a	Fog	44°7° (likely 41°5° to 44°7°)	44°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	60%	0
Sat 8a	Fog	44°7° (likely 41°5° to 44°7°)	44°7°	0%	0 mph0 km/h, gusts 4 mph6 km/h	99%	62%	0
Sat 9a	Fog	46°8° (likely 42°6° to 46°8°)	47°8°	0%	1 mph2 km/h from N, gusts 4 mph7 km/h	97%	57%	0
Sat 10a	Fog	50°10° (likely 44°7° to 51°11°)	50°10°	0%	1 mph2 km/h from NE, gusts 3 mph6 km/h	90%	51%	1
Sat 11a	Partly sunny	54°12° (likely 46°8° to 56°13°)	54°12°	0%	1 mph2 km/h from E, gusts 4 mph7 km/h	81%	46%	2
Sat 12p	Mostly sunny	58°14° (likely 51°11° to 60°16°)	58°14°	0%	1 mph2 km/h from E, gusts 7 mph12 km/h	72%	48%	3
Sat 1p	Partly sunny	62°17° (likely 55°13° to 63°17°)	62°17°	0%	2 mph3 km/h from E, gusts 8 mph12 km/h	62%	51%	4
Sat 2p	Mostly sunny	64°18° (likely 59°15° to 66°19°)	65°18°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	57%	52%	4
Sat 3p	Mostly sunny	66°19° (likely 62°17° to 67°19°)	66°19°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	53%	19%	4
Sat 4p	Mostly sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	51%	50%	3
Sat 5p	Mostly sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	3 mph5 km/h from E, gusts 8 mph12 km/h	51%	60%	2
Sat 6p	Sunny	64°18° (likely 59°15° to 64°18°)	64°18°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	55%	25%	1
Sat 7p	Mostly clear	60°16° (likely 54°12° to 60°16°)	60°16°	0%	3 mph5 km/h from E, gusts 9 mph14 km/h	65%	27%	0
Sat 8p	Cloudy	54°12° (likely 53°12° to 54°12°)	54°12°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	83%	57%	0
Sat 9p	Partly cloudy	53°12° (likely 52°11° to 53°12°)	53°12°	0%	2 mph3 km/h from E, gusts 9 mph15 km/h	87%	52%	0
Sat 10p	Partly cloudy	51°11° (likely 50°10° to 52°11°)	51°11°	0%	2 mph3 km/h from SE, gusts 9 mph15 km/h	91%	26%	0
Sat 11p	Clear	50°10° (likely 49°9° to 51°11°)	50°10°	0%	2 mph3 km/h from SE, gusts 10 mph15 km/h	93%	18%	0
Sun 12a	Clear	49°9° (likely 48°9° to 50°10°)	49°9°	0%	2 mph3 km/h from SE, gusts 10 mph15 km/h	93%	10%	0
Sun 1a	Clear	48°9° (likely 47°8° to 49°9°)	48°9°	0%	1 mph2 km/h from SE, gusts 9 mph15 km/h	93%	2%	0
Sun 2a	Clear	47°8° (likely 46°8° to 48°9°)	47°8°	0%	1 mph2 km/h from S, gusts 8 mph12 km/h	93%	2%	0
Sun 3a	Clear	46°8° (likely 45°7° to 47°8°)	46°8°	0%	1 mph2 km/h from S, gusts 7 mph12 km/h	94%	1%	0
Sun 4a	Clear	45°7° (likely 44°7° to 46°8°)	45°7°	0%	1 mph2 km/h from S, gusts 8 mph12 km/h	94%	0%	0
Sun 5a	Clear	43°6° (likely 43°6° to 45°7°)	43°6°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	97%	2%	0
Sun 6a	Clear	43°6° (likely 42°6° to 44°7°)	43°6°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	97%	40%	0
Sun 7a	Fog	42°6° (likely 41°5° to 43°6°)	42°6°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	97%	38%	0
Sun 8a	Fog	42°6° (likely 40°4° to 42°6°)	42°6°	0%	1 mph2 km/h from SW, gusts 6 mph9 km/h	97%	20%	0
Sun 9a	Fog	44°7° (likely 42°6° to 45°7°)	44°7°	0%	2 mph3 km/h from SW, gusts 5 mph7 km/h	96%	49%	0
Sun 10a	Mostly sunny	51°11° (likely 48°9° to 51°11°)	51°11°	0%	2 mph3 km/h from S, gusts 7 mph11 km/h	80%	19%	1
Sun 11a	Partly sunny	57°14° (likely 55°13° to 57°14°)	57°14°	0%	3 mph5 km/h from S, gusts 8 mph12 km/h	69%	53%	2
Sun 12p	Partly sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	61%	56%	3
Sun 1p	Partly sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	52%	66%	4
Sun 2p	Cloudy	68°20° (likely 66°19° to 68°20°)	68°20°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	47%	76%	4
Sun 3p	Partly sunny	69°21° (likely 68°20° to 69°21°)	69°21°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	44%	67%	4
Sun 4p	Cloudy	69°21° (likely 68°20° to 69°21°)	69°21°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	42%	67%	3
Sun 5p	Cloudy	69°21° (likely 68°20° to 69°21°)	69°21°	0%	5 mph8 km/h from S, gusts 9 mph14 km/h	42%	91%	2
Sun 6p	Partly sunny	67°19° (likely 65°18° to 67°19°)	67°19°	0%	2 mph3 km/h from S, gusts 8 mph12 km/h	46%	71%	1
Sun 7p	Partly cloudy	64°18° (likely 61°16° to 64°18°)	64°18°	0%	2 mph3 km/h from S, gusts 4 mph7 km/h	54%	64%	0
Sun 8p	Partly cloudy	58°14° (likely 57°14° to 60°16°)	59°15°	0%	1 mph2 km/h from SE, gusts 4 mph7 km/h	66%	49%	0
Sun 9p	Clear	56°13° (likely 54°12° to 61°16°)	56°13°	0%	1 mph2 km/h from S, gusts 2 mph3 km/h	71%	60%	0
Sun 10p	Mostly clear	54°12° (likely 52°11° to 60°16°)	54°12°	0%	1 mph2 km/h from S, gusts 2 mph4 km/h	74%	51%	0
Sun 11p	Partly cloudy	53°12° (likely 50°10° to 59°15°)	53°12°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	77%	58%	0
Mon 12a	Partly cloudy	51°11° (likely 49°9° to 58°14°)	51°11°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	79%	45%	0
Mon 1a	Partly cloudy	50°10° (likely 47°8° to 57°14°)	50°10°	0%	1 mph2 km/h from SW, gusts 4 mph7 km/h	81%	32%	0
Mon 2a	Partly cloudy	49°9° (likely 46°8° to 56°13°)	49°9°	0%	2 mph3 km/h from SW, gusts 5 mph7 km/h	83%	41%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Fog. High 66°19°, low 44°7°. Typical 61°16° / 42°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Fog, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Official NWS forecast
Today: Widespread fog before 11am. Mostly sunny, with a high near 66. East wind 0 to 3 mph.
Tonight: Widespread fog. Mostly cloudy, with a low around 44. Northeast wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
41°5°–44°7°
Typical high / low
61°16° / 42°6°
Wind
6 mph9 km/h, gusts 14 mph23 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 70°21°, low 44°7°. Typical 61°16° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Fog, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°9°
  Dry
Official NWS forecast
Day: Patchy fog before 10am. Mostly sunny, with a high near 70. South wind 1 to 5 mph.
Night: Partly cloudy, with a low around 44. South wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
68°20°–70°21°
Low, likely
40°4°–44°7°
Typical high / low
61°16° / 42°6°
Wind
5 mph9 km/h, gusts 15 mph23 km/h
UV peak
4
Monday, Oct 26. Partly sunny. High 69°21°, low 46°8°. Typical 60°16° / 41°5°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Partly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 69.
Night: Mostly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 69°21°).
High, likely
69°21°–72°22°
Low, likely
43°6°–50°10°
Typical high / low
60°16° / 41°5°
Wind
10 mph17 km/h, gusts 19 mph30 km/h
UV peak
4
Tuesday, Oct 27. Cloudy. High 61°16°, low 46°8°. Typical 60°16° / 41°5°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 61.
Night: Mostly cloudy, with a low around 46.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–66°19°
Low, likely
46°8°–49°9°
Typical high / low
60°16° / 41°5°
Wind
10 mph17 km/h, gusts 20 mph32 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 68°20°, low 51°11°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 68.
Night: Partly cloudy, with a low around 51.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–72°22°
Low, likely
48°9°–53°12°
Typical high / low
60°16° / 40°4°
Wind
9 mph15 km/h, gusts 20 mph33 km/h
UV peak
3
Thursday, Oct 29. Partly sunny. High 72°22°, low 45°7°. Typical 59°15° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 72.
Night: Partly cloudy, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
68°20°–74°23°
Low, likely
45°7°–53°12°
Typical high / low
59°15° / 40°4°
Wind
11 mph17 km/h, gusts 28 mph45 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 68°20°, low 46°8°. Typical 59°15° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–75°24°
Low, likely
38°3°–56°13°
Typical high / low
59°15° / 40°4°
Wind
11 mph18 km/h, gusts 31 mph50 km/h
UV peak
2
Saturday, Oct 31. Cloudy. High 70°21°, low 51°11°. Typical 58°14° / 40°4°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 63°17°
  20% chance
4. Overnight
  midnight–6 AM
  Drizzle, 56°13°
  30% chance · 0.04 in1 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–75°24°
Low, likely
45°7°–56°13°
Typical high / low
58°14° / 40°4°
Wind
12 mph19 km/h, gusts 18 mph29 km/h
UV peak
2
Sunday, Nov 1. Drizzle. High 69°21°, low 57°14°. Typical 58°14° / 39°4°. Rain 0.23 in5.8 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 57°14°
  30% chance · 0.02 in0.6 mm
2. Afternoon
  noon–6 PM
  Drizzle, 68°20°
  40% chance · 0.01 in0.3 mm
3. Evening
  6 PM–midnight
  Drizzle, 64°18°
  40% chance · 0.14 in3.7 mm
4. Overnight
  midnight–6 AM
  Drizzle, 61°16°
  40% chance · 0.13 in3.3 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–72°22°
Low, likely
52°11°–60°16°
Typical high / low
58°14° / 39°4°
Wind
19 mph30 km/h, gusts 35 mph56 km/h
UV peak
1
Monday, Nov 2. Cloudy. High 62°17°, low 49°9°. Typical 57°14° / 39°4°. Rain 0.35 in8.9 mm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 60°16°
  40% chance · 0.05 in1.3 mm
2. Afternoon
  noon–6 PM
  Drizzle, 60°15°
  30% chance · 0.19 in4.8 mm
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  30% chance · 0.06 in1.5 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–64°18°
Low, likely
42°6°–53°12°
Typical high / low
57°14° / 39°4°
Wind
20 mph32 km/h, gusts 39 mph63 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 66°, low 44°.
Tomorrow
Dry, high 70°, low 44°, warming up.
Monday
Dry, high 69°, low 46°.
Rest of week
Highs 61–72°; chance of precipitation on Sunday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (CLE) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Maumee River at Waterville

15 mi

Below flood stage

Level: 2.0 ft
Flow: 545 cfs

Forecast peak 2.1 ft Sat 8 AM

Reading from Sat 1 AM · NWS gauge page

Tenmile Creek at Mitchaw

3.1 mi

Level: 3.9 ft

Reading from Sat 1 AM · NWS gauge page

Tenmile Creek at Silica

3.3 mi

Level: 4.6 ft

Reading from Sat 1:30 AM · NWS gauge page

Ottawa River at University of Toledo

6.1 mi

Below flood stage

Level: 2.1 ft
Flow: 4 cfs

Reading from Sat 1:30 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 78% less heating than a typical week.

This week 22Typical 102

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 14
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 2 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Today, 1:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

Toledo Express Airport · official normals 1991–2020 · records 1873–2026

Oct 24, today vs a typical year

Today’s expected high is 5°3° warmer than typical.

Last 7 days vs normal

On average 2°1° colder than normal (daily mean temperature).

−9°−5°SatOct 17
−5°−3°SunOct 18
−2°−1°MonOct 19
±0°TueOct 20
+2°+1°WedOct 21
+3°+1°ThuOct 22
—FriOct 23

Sylvania weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 42 min; Losing 2 min 39 s a day; shortest Dec 21, 1 h 34 min less
Golden hour: 6:01–6:57 PM; Morning 7:40–8:36 AM
Blue hour: 6:57–7:08 PM; Morning 7:29–7:40 AM; first light 7:29 AM

Stars tonight? Poor

Clouds most of the night (about 55% cover).

Moon

Waxing gibbous

96% lit · growing

Today: sets 6:09 AM · rises 5:37 PM
Full moon: Oct 26
New moon: Nov 9

Looking east from Sylvania. Water in view.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Dense Fog Advisory