Current Conditions

Altadena, California

67°F20°C

Clear

Wind

S 2 mph4 km/h

Humidity

77%

Cloud Cover

64%

As of Thursday, August 13, 2026 at 10:42 PM PDT

Today's Outlook

Night

Mostly clear, with a low around 65°F19°C. Light wind from the S around 2 mph4 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 82°F28°C	Low 65°F19°C	Precip 0 in0.1 mm1%	Cloud 16%	Wind SSW 4 mph6 km/h	Friday: Mostly clear and warm, with a high of 82°F28°C and morning low of 69°F20°C. Breezy from the SSW at 6 to 8 mph9 to 13 km/h. Friday Night: Mostly clear, with a low around 65°F19°C. Light wind from the S around 2 mph4 km/h.
Clear	High 85°F30°C	Low 65°F18°C	Precip 0 in0 mm—	Cloud 15%	Wind SSW 4 mph6 km/h	Saturday: Mostly clear and warm, with a high of 85°F30°C and morning low of 70°F21°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. Saturday Night: Mostly clear, with a low around 65°F18°C. Light wind from the S around 2 mph3 km/h.
Clear	High 88°F31°C	Low 65°F19°C	Precip 0 in0 mm—	Cloud 13%	Wind SW 3 mph6 km/h	Sunday: Mostly clear and hot, with a high of 88°F31°C and morning low of 71°F22°C. Breezy from the SW at 5 to 7 mph8 to 12 km/h. Sunday Night: Mostly clear, with a low around 65°F19°C. Light wind from the SSW around 2 mph3 km/h.
Clear	High 90°F32°C	Low 67°F20°C	Precip 0 in0 mm—	Cloud 33%	Wind SW 3 mph6 km/h	Monday: Partly cloudy and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SW at 5 to 8 mph8 to 12 km/h. Monday Night: Partly cloudy, with a low around 67°F20°C. Light wind from the SSE around 2 mph3 km/h.
Clear	High 90°F32°C	Low 68°F20°C	Precip 0 in0 mm—	Cloud 22%	Wind SSW 4 mph6 km/h	Tuesday: Mostly clear and hot, with a high of 90°F32°C and morning low of 74°F24°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. Tuesday Night: Partly cloudy, with a low around 68°F20°C. Light wind from the SE around 2 mph3 km/h.
Clear	High 91°F33°C	Low 68°F20°C	Precip 0 in0 mm—	Cloud 12%	Wind SSW 4 mph6 km/h	Wednesday: Mostly clear and hot, with a high of 91°F33°C and morning low of 75°F24°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. Wednesday Night: Mostly clear, with a low around 68°F20°C. Light wind from the SE around 2 mph3 km/h.
Clear	High 91°F33°C	Low 69°F20°C	Precip 0 in0 mm—	Cloud 12%	Wind SSW 4 mph6 km/h	Thursday: Mostly clear and hot, with a high of 91°F33°C and morning low of 75°F24°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. Thursday Night: Mostly clear, with a low around 69°F20°C. Light wind from the SE around 2 mph3 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	FridayAug 14	82°F28°C	65°F19°C	0 in0.1 mm· 1%	16%	Clear	SSW 4 mph6 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 69°F20°C. Breezy from the SSW at 6 to 8 mph9 to 13 km/h. NightMostly clear, with a low around 65°F19°C. Light wind from the S around 2 mph4 km/h.
	SaturdayAug 15	85°F30°C	65°F18°C	0 in0 mm· —	15%	Clear	SSW 4 mph6 km/h
DayMostly clear and warm, with a high of 85°F30°C and morning low of 70°F21°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. NightMostly clear, with a low around 65°F18°C. Light wind from the S around 2 mph3 km/h.
	SundayAug 16	88°F31°C	65°F19°C	0 in0 mm· —	13%	Clear	SW 3 mph6 km/h
DayMostly clear and hot, with a high of 88°F31°C and morning low of 71°F22°C. Breezy from the SW at 5 to 7 mph8 to 12 km/h. NightMostly clear, with a low around 65°F19°C. Light wind from the SSW around 2 mph3 km/h.
	MondayAug 17	90°F32°C	67°F20°C	0 in0 mm· —	33%	Clear	SW 3 mph6 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SW at 5 to 8 mph8 to 12 km/h. NightPartly cloudy, with a low around 67°F20°C. Light wind from the SSE around 2 mph3 km/h.
	TuesdayAug 18	90°F32°C	68°F20°C	0 in0 mm· —	22%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 74°F24°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. NightPartly cloudy, with a low around 68°F20°C. Light wind from the SE around 2 mph3 km/h.
	WednesdayAug 19	91°F33°C	68°F20°C	0 in0 mm· —	12%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 91°F33°C and morning low of 75°F24°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. NightMostly clear, with a low around 68°F20°C. Light wind from the SE around 2 mph3 km/h.
	ThursdayAug 20	91°F33°C	69°F20°C	0 in0 mm· —	12%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 91°F33°C and morning low of 75°F24°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. NightMostly clear, with a low around 69°F20°C. Light wind from the SE around 2 mph3 km/h.
	FridayAug 21	91°F33°C	69°F20°C	0 in0 mm· —	15%	Clear	SSW 3 mph6 km/h
DayMostly clear and hot, with a high of 91°F33°C and morning low of 75°F24°C. Breezy from the SSW at 5 to 7 mph8 to 12 km/h. NightMostly clear, with a low around 69°F20°C. Light wind from the SE around 2 mph3 km/h.
	SaturdayAug 22	92°F33°C	69°F21°C	0 in0 mm· —	15%	Clear	SSW 3 mph6 km/h
DayMostly clear and hot, with a high of 92°F33°C and morning low of 75°F24°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. NightMostly clear, with a low around 69°F21°C. Light wind from the SE around 2 mph3 km/h.
	SundayAug 23	93°F34°C	70°F21°C	0 in0.1 mm· 4%	17%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 93°F34°C and morning low of 76°F25°C. Breezy from the SW at 5 to 8 mph8 to 12 km/h. NightMostly clear, with a low around 70°F21°C. Light wind from the SE around 2 mph3 km/h.
	MondayAug 24	92°F33°C	70°F21°C	0 in0.1 mm· 6%	16%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 92°F33°C and morning low of 76°F24°C. Breezy from the SSW at 5 to 8 mph8 to 13 km/h. NightMostly clear, with a low around 70°F21°C. Light wind from the SE around 2 mph3 km/h.
	TuesdayAug 25	92°F33°C	69°F21°C	0 in0.1 mm· 4%	21%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 92°F33°C and morning low of 76°F24°C. Breezy from the SW at 5 to 8 mph8 to 12 km/h. NightMostly clear, with a low around 69°F21°C. Light wind from the SE around 2 mph3 km/h.
	WednesdayAug 26	91°F33°C	69°F21°C	0.01 in0.2 mm· 5%	28%	Clear	SSW 4 mph6 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 75°F24°C. Breezy from the SW at 5 to 8 mph8 to 12 km/h. NightPartly cloudy, with a low around 69°F21°C. Light wind from the SE around 2 mph3 km/h.
	ThursdayAug 27	91°F33°C	69°F21°C	0.02 in0.4 mm· 5%	34%	Clear	SSW 4 mph6 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 76°F25°C. Breezy from the SW at 5 to 8 mph8 to 12 km/h. Dry air. NightPartly cloudy, with a low around 69°F21°C. Light wind from the SE around 2 mph3 km/h.
	FridayAug 28	89°F32°C	69°F20°C	0.01 in0.3 mm· 4%	33%	Clear	SSW 4 mph7 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 74°F23°C. Breezy from the SSW at 5 to 8 mph8 to 12 km/h. NightPartly cloudy, with a low around 69°F20°C. Light wind from the ENE around 2 mph3 km/h.

Nearby Cities

Pasadena3 mi5 km La Cañada Flintridge3 mi5 km South Pasadena5 mi8 km Arcadia6 mi10 km Alhambra7 mi11 km San Gabriel7 mi11 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

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Coordinates: 34.1897°N, 118.1312°W·Elevation: 414m·Timezone: America/Los_Angeles·Population: 42,777