Monongahela River at Maxwell Lock and Dam (lower pool)
9.7 mi- Level
- 10.4 ft
- Flow
- 8,250 cfs
Forecast peak 10.4 ft Sat 2 AM
Reading from Fri 10:30 PM · NWS gauge page
Observed 11:10 PM EDT at KMGW
Smock, PA weather
Clear and 52°11°.
Today: low 38°3° (likely 35°2° to 41°5°), high 63°17° (likely 62°17° to 64°18°).
Now 52°11°
Clear
- Wind
- 5 mph7 km/h
- From the southeast. Light through 11 AM
- Dew point
- 39°4°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 11 AM–5 PM · peak 4
- Air quality
- 62Moderate
- Main pollutant: PM2.5 (fine particles)
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
6°3° warmer than this time yesterday (46°8° then, 52°11° now)
Good hours for
TonightDown to 40°4° by 5 AM · Clear
Tomorrow morningUp to 55°13° by 11 AM · Clear
Tomorrow afternoonUp to 65°18° by 4 PM · Clear
Tomorrow nightDown to 38°3° by 5 AM · Clear
Sunday morningUp to 55°13° by 11 AM · Clear
Sunday afternoonUp to 66°19° by 3 PM · Clear
Sunday nightDown to 46°8° by 10 PM · Clear
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Fri 11p | Clear | 49°9° (likely 44°7° to 49°9°) | 49°9° | 0% | 2 mph3 km/h from E, gusts 7 mph11 km/h | 70% | 0% | 0 |
| Sat 12a | Clear | 47°8° (likely 43°6° to 48°9°) | 47°8° | 0% | 2 mph3 km/h from E, gusts 7 mph12 km/h | 73% | 6% | 0 |
| Sat 1a | Clear | 45°7° (likely 42°6° to 48°9°) | 45°7° | 0% | 2 mph3 km/h from E, gusts 8 mph12 km/h | 76% | 7% | 0 |
| Sat 2a | Clear | 44°7° (likely 42°6° to 47°8°) | 43°6° | 0% | 3 mph5 km/h from E, gusts 8 mph13 km/h | 76% | 7% | 0 |
| Sat 3a | Clear | 43°6° (likely 41°5° to 46°8°) | 43°6° | 0% | 2 mph3 km/h from E, gusts 7 mph12 km/h | 79% | 8% | 0 |
| Sat 4a | Clear | 41°5° (likely 40°4° to 45°7°) | 41°5° | 0% | 2 mph3 km/h from E, gusts 5 mph8 km/h | 88% | 9% | 0 |
| Sat 5a | Clear | 40°4° (likely 39°4° to 44°7°) | 40°4° | 0% | 2 mph3 km/h from E, gusts 4 mph7 km/h | 90% | 11% | 0 |
| Sat 6a | Clear | 39°4° (likely 38°3° to 43°6°) | 39°4° | 0% | 1 mph2 km/h from E, gusts 5 mph8 km/h | 92% | 12% | 0 |
| Sat 7a | Clear | 39°4° (likely 37°3° to 43°6°) | 39°4° | 0% | 1 mph2 km/h from E, gusts 5 mph8 km/h | 92% | 12% | 0 |
| Sat 8a | Sunny | 38°3° (likely 37°3° to 42°6°) | 38°3° | 0% | 1 mph2 km/h from E, gusts 5 mph7 km/h | 93% | 12% | 0 |
| Sat 9a | Sunny | 42°6° (likely 42°6° to 46°8°) | 42°6° | 0% | 2 mph3 km/h from SE, gusts 4 mph7 km/h | 88% | 10% | 0 |
| Sat 10a | Sunny | 51°11° (likely 51°11° to 53°12°) | 51°11° | 0% | 1 mph2 km/h from SE, gusts 8 mph12 km/h | 66% | 0% | 1 |
| Sat 11a | Sunny | 55°13° (likely 55°13° to 58°14°) | 55°13° | 0% | 1 mph2 km/h from SE, gusts 6 mph10 km/h | 59% | 0% | 3 |
| Sat 12p | Sunny | 59°15° (likely 59°15° to 61°16°) | 59°15° | 0% | 1 mph2 km/h from SE, gusts 4 mph7 km/h | 55% | 1% | 4 |
| Sat 1p | Sunny | 63°17° (likely 61°16° to 63°17°) | 63°17° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 52% | 8% | 4 |
| Sat 2p | Sunny | 64°18° (likely 62°17° to 64°18°) | 64°18° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 52% | 8% | 4 |
| Sat 3p | Sunny | 64°18° (likely 63°17° to 65°18°) | 64°18° | 0% | 1 mph2 km/h from E, gusts 3 mph6 km/h | 52% | 11% | 4 |
| Sat 4p | Sunny | 65°18° (likely 63°17° to 65°18°) | 65°18° | 0% | 1 mph2 km/h from E, gusts 4 mph7 km/h | 50% | 9% | 3 |
| Sat 5p | Sunny | 64°18° (likely 62°17° to 64°18°) | 64°18° | 0% | 2 mph3 km/h from E, gusts 6 mph10 km/h | 51% | 13% | 2 |
| Sat 6p | Clear | 62°17° (likely 59°15° to 62°17°) | 62°17° | 0% | 2 mph3 km/h from E, gusts 9 mph14 km/h | 55% | 12% | 1 |
| Sat 7p | Clear | 58°14° (likely 54°12° to 58°14°) | 58°14° | 0% | 3 mph5 km/h from E, gusts 7 mph12 km/h | 62% | 9% | 0 |
| Sat 8p | Clear | 52°11° (likely 51°11° to 53°12°) | 52°11° | 0% | 5 mph8 km/h from E, gusts 9 mph15 km/h | 74% | 5% | 0 |
| Sat 9p | Clear | 49°9° (likely 49°9° to 52°11°) | 48°9° | 0% | 5 mph8 km/h from SE, gusts 10 mph16 km/h | 77% | 0% | 0 |
| Sat 10p | Clear | 48°9° (likely 48°9° to 51°11°) | 46°8° | 0% | 5 mph8 km/h from SE, gusts 10 mph15 km/h | 79% | 0% | 0 |
| Sat 11p | Clear | 46°8° (likely 46°8° to 50°10°) | 44°7° | 0% | 5 mph8 km/h from SE, gusts 10 mph16 km/h | 79% | 0% | 0 |
| Sun 12a | Clear | 45°7° (likely 45°7° to 49°9°) | 43°6° | 0% | 3 mph5 km/h from SE, gusts 9 mph15 km/h | 83% | 0% | 0 |
| Sun 1a | Clear | 43°6° (likely 43°6° to 48°9°) | 43°6° | 0% | 2 mph3 km/h from SE, gusts 9 mph15 km/h | 86% | 0% | 0 |
| Sun 2a | Clear | 43°6° (likely 41°5° to 47°8°) | 43°6° | 0% | 2 mph3 km/h from SE, gusts 8 mph14 km/h | 88% | 0% | 0 |
| Sun 3a | Clear | 41°5° (likely 40°4° to 45°7°) | 41°5° | 0% | 1 mph2 km/h from SE, gusts 5 mph8 km/h | 93% | 1% | 0 |
| Sun 4a | Clear | 40°4° (likely 38°3° to 44°7°) | 40°4° | 0% | 1 mph2 km/h from SE, gusts 3 mph4 km/h | 95% | 9% | 0 |
| Sun 5a | Clear | 38°3° (likely 37°3° to 43°6°) | 38°3° | 0% | 1 mph2 km/h from SE, gusts 3 mph4 km/h | 98% | 11% | 0 |
| Sun 6a | Clear | 37°3° (likely 35°2° to 43°6°) | 37°3° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 100% | 12% | 0 |
| Sun 7a | Clear | 37°3° (likely 34°1° to 43°6°) | 37°3° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 100% | 12% | 0 |
| Sun 8a | Sunny | 37°3° (likely 34°1° to 42°6°) | 37°3° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 99% | 12% | 0 |
| Sun 9a | Sunny | 40°4° (likely 38°3° to 45°7°) | 40°4° | 0% | 1 mph2 km/h from SE, gusts 2 mph4 km/h | 100% | 8% | 0 |
| Sun 10a | Sunny | 47°8° (likely 47°8° to 52°11°) | 47°8° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 89% | 1% | 1 |
| Sun 11a | Sunny | 55°13° (likely 55°13° to 57°14°) | 55°13° | 0% | 0 mph0 km/h, gusts 5 mph7 km/h | 70% | 2% | 3 |
| Sun 12p | Sunny | 60°16° (likely 59°15° to 61°16°) | 60°16° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 60% | 2% | 4 |
| Sun 1p | Sunny | 63°17° (likely 61°16° to 63°17°) | 63°17° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 53% | 1% | 4 |
| Sun 2p | Sunny | 65°18° (likely 62°17° to 65°18°) | 65°18° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 50% | 1% | 4 |
| Sun 3p | Sunny | 66°19° (likely 63°17° to 66°19°) | 66°19° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 47% | 1% | 4 |
| Sun 4p | Sunny | 66°19° (likely 63°17° to 66°19°) | 66°19° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 46% | 2% | 3 |
| Sun 5p | Sunny | 65°18° (likely 62°17° to 65°18°) | 65°18° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 49% | 1% | 2 |
| Sun 6p | Clear | 61°16° (likely 59°15° to 61°16°) | 61°16° | 0% | 0 mph0 km/h, gusts 3 mph6 km/h | 56% | 1% | 1 |
| Sun 7p | Clear | 56°13° (likely 54°12° to 56°13°) | 57°14° | 0% | 1 mph2 km/h from E, gusts 3 mph5 km/h | 67% | 31% | 0 |
| Sun 8p | Clear | 52°11° (likely 50°10° to 52°11°) | 52°11° | 0% | 1 mph2 km/h from E, gusts 3 mph5 km/h | 78% | 27% | 0 |
| Sun 9p | Clear | 49°9° (likely 48°9° to 50°10°) | 49°9° | 0% | 2 mph3 km/h from E, gusts 3 mph4 km/h | 87% | 3% | 0 |
| Sun 10p | Clear | 46°8° (likely 46°8° to 49°9°) | 46°8° | 0% | 1 mph2 km/h from SE, gusts 3 mph4 km/h | 93% | 3% | 0 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 23. Sunny. High 63°17°, low 38°3°. Typical 63°17° / 40°4°. Dry. Forecasts agree.
Overnight
midnight–6 AM
Clear, 40°4°Dry
Official NWS forecast
Tonight: Clear, with a low around 38. East wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 62°17°–64°18°
- Low, likely
- 35°2°–41°5°
- Typical high / low
- 63°17° / 40°4°
- Wind
- 7 mph11 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Tomorrow, Oct 24. Sunny. High 66°19°, low 36°2°. Typical 63°17° / 39°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 38°3°Dry
Afternoon
noon–6 PM
Sunny, 65°18°Dry
Evening
6 PM–midnight
Clear, 52°11°Dry
Overnight
midnight–6 AM
Clear, 38°3°Dry
Official NWS forecast
Day: Sunny, with a high near 66. East wind around 2 mph.
Night: Patchy fog after 3am. Clear, with a low around 36. Southeast wind 1 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 63°17°–66°19°
- Low, likely
- 36°2°–42°6°
- Typical high / low
- 63°17° / 39°4°
- Wind
- 9 mph15 km/h, gusts 17 mph27 km/h
- UV peak
- 4
Sunday, Oct 25. Fog. High 66°19°, low 38°3°. Typical 62°17° / 39°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 37°3°Dry
Afternoon
noon–6 PM
Sunny, 66°19°Dry
Evening
6 PM–midnight
Clear, 52°11°Dry
Overnight
midnight–6 AM
Clear, 40°4°Dry
Official NWS forecast
Day: Patchy fog before 7am, then patchy frost and patchy fog between 7am and 10am. Sunny, with a high near 66. East wind around 1 mph.
Night: Patchy fog after 3am. Mostly clear, with a low around 38. Southeast wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 63°17°–66°19°
- Low, likely
- 33°1°–42°6°
- Typical high / low
- 62°17° / 39°4°
- Wind
- 8 mph12 km/h, gusts 15 mph24 km/h
- UV peak
- 4
Monday, Oct 26. Fog. High 67°19°, low 42°6°. Typical 62°17° / 38°3°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 39°4°Dry
Afternoon
noon–6 PM
Sunny, 66°19°Dry
Evening
6 PM–midnight
Clear, 54°12°Dry
Overnight
midnight–6 AM
Mostly clear, 43°6°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 9am. Sunny, with a high near 67.
Night: Mostly clear, with a low around 42.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 65°18°–67°19°
- Low, likely
- 35°2°–42°6°
- Typical high / low
- 62°17° / 38°3°
- Wind
- 5 mph8 km/h, gusts 12 mph19 km/h
- UV peak
- 4
Tuesday, Oct 27. Partly sunny. High 66°19°, low 43°6°. Typical 62°17° / 38°3°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 43°6°Dry
Afternoon
noon–6 PM
Sunny, 65°18°Dry
Evening
6 PM–midnight
Cloudy, 54°12°Dry
Overnight
midnight–6 AM
Cloudy, 48°9°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 66.
Night: Partly cloudy, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 62°17°–67°19°
- Low, likely
- 39°4°–45°7°
- Typical high / low
- 62°17° / 38°3°
- Wind
- 8 mph12 km/h, gusts 13 mph21 km/h
- UV peak
- 4
Wednesday, Oct 28. Cloudy. High 68°20°, low 45°7°. Typical 61°16° / 38°3°. Dry. Forecasts differ.
Morning
6 AM–noon
Cloudy, 47°8°Dry
Afternoon
noon–6 PM
Cloudy, 66°19°Dry
Evening
6 PM–midnight
Cloudy, 55°13°Dry
Overnight
midnight–6 AM
Mostly clear, 47°8°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 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 64°18°–70°21°
- Low, likely
- 45°7°–49°9°
- Typical high / low
- 61°16° / 38°3°
- Wind
- 10 mph16 km/h, gusts 15 mph25 km/h
- UV peak
- 2
Thursday, Oct 29. Partly sunny. High 70°21°, low 46°8°. Typical 61°16° / 38°3°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 47°8°Dry
Afternoon
noon–6 PM
Sunny, 69°20°Dry
Evening
6 PM–midnight
Clear, 56°14°Dry
Overnight
midnight–6 AM
Clear, 46°8°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 68°20°–71°22°
- Low, likely
- 44°7°–49°9°
- Typical high / low
- 61°16° / 38°3°
- Wind
- 10 mph16 km/h, gusts 27 mph43 km/h
- UV peak
- 4
Friday, Oct 30. Partly sunny. High 67°19°, low 45°7°. Typical 60°16° / 37°3°. Dry. Forecasts differ.
Morning
6 AM–noon
Mostly sunny, 44°7°Dry
Afternoon
noon–6 PM
Sunny, 66°19°Dry
Evening
6 PM–midnight
Clear, 53°12°Dry
Overnight
midnight–6 AM
Mostly clear, 44°6°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 60°16°–73°23°
- Low, likely
- 42°6°–48°9°
- Typical high / low
- 60°16° / 37°3°
- Wind
- 5 mph9 km/h, gusts 17 mph27 km/h
- UV peak
- 4
Saturday, Oct 31. Cloudy. High 71°22°, low 44°7°. Typical 60°16° / 37°3°. Dry. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 44°6°Dry
Afternoon
noon–6 PM
Partly sunny, 70°21°Dry
Evening
6 PM–midnight
Cloudy, 58°15°Dry
Overnight
midnight–6 AM
Partly cloudy, 52°11°Dry
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
- 68°20°–74°23°
- Low, likely
- 37°3°–50°10°
- Typical high / low
- 60°16° / 37°3°
- Wind
- 7 mph11 km/h, gusts 20 mph31 km/h
- UV peak
- 4
Sunday, Nov 1. Drizzle. High 69°21°, low 53°12°. Typical 60°16° / 37°3°. Rain 0.07 in1.8 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 54°12°30% chance · 0.03 in0.7 mm
Afternoon
noon–6 PM
Cloudy, 68°20°30% chance
Evening
6 PM–midnight
Cloudy, 61°16°30% chance · 0.01 in0.3 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
- 45°7°–57°14°
- Typical high / low
- 60°16° / 37°3°
- Wind
- 9 mph15 km/h, gusts 24 mph39 km/h
- UV peak
- 2
The outlook
Today
Dry, high 63°, low 38°.
Tomorrow
Dry, high 66°, low 36°, warming up.
Sunday
Dry, high 66°, low 38°.
Rest of week
Mostly dry, highs 66–71°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (PBZ) (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
Rivers
NOAA river gauges within 25 mi
Below flood stage
Youghiogheny River at Connellsville
9.8 mi- Level
- 2.8 ft
- Flow
- 1,310 cfs
Forecast peak 2.9 ft Sat 2 AM
Reading from Fri 10:15 PM · NWS gauge page
Monongahela River at Charleroi Lock and Dam
12 mi- Level
- 8.7 ft
Forecast peak 8.6 ft Sat 2 AM
Reading from Fri 10 PM · NWS gauge page
Monongahela River at Grays Landing Lock and Dam
14 mi- Level
- 11.6 ft
- Flow
- 8,160 cfs
Forecast peak 11.6 ft Sat 8 PM
Reading from Fri 10:46 PM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 72% less heating than a typical week.
This week 29Typical 103
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 23
- 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 13 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 39°F).
Open the windows?
Sat, 1:00 PM–6:00 PM
Good stretch to open the windows.
Is this typical?
Donora 1 SW · official normals 1991–2020 · records 1926–2026
Oct 23, today vs a typical year
Today’s expected high is about typical for the date.
- Normal high / low
- 63°17° / 40°4°
- Forecast high / low
- 63°17° / 38°3°
- Record high
- 84°29° in 1947
- Record low
- 26°−3° in 1976
Last 7 days vs normal
- —SatOct 17
- —SunOct 18
- —MonOct 19
- —TueOct 20
- —WedOct 21
- —ThuOct 22
- —FriOct 23
Smock weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:38 AM, sunset 6:28 PM.
- Daylight
- 10 h 50 min
- Losing 2 min 30 s a day; shortest Dec 21, 1 h 30 min less
- Golden hour
- 5:50–6:44 PM
- Morning 7:21–8:15 AM
- Blue hour
- 6:44–6:55 PM
- Morning 7:10–7:21 AM; first light 7:10 AM
Stars tonight? Good
Clear 11:36 PM–7:11 AM; moon 95% lit, sets 5:51 AM.
Moon
Waxing gibbous
95% lit · growing
- Today
- sets 4:43 AM · rises 4:59 PM
- Full moon
- Oct 26
- New moon
- Nov 9
