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Weather in Altadena, United States 🇺🇸

Current Weather in Altadena

Sunny
33°C
Feels like 32°C. Sunny.
🌬️ 8 km/h SSW
💧 29% Humidity
🧭 1011 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.0
🌡️ Dew Point: 13°C
🌅 Sunrise: 06:19 AM
🌇 Sunset: 07:30 PM
Map Overlays:

Altadena currently sits at 33°C, sunny, feeling like 32°C. The air is at 29% humidity and winds are about 8 km/h, and the UV index is 0 (low). In the days ahead, expect temperatures in Altadena from about 22°C to 41°C.

Hourly Forecast for Altadena

20:00
Clear
28°
1%
21:00
Clear
26°
1%
22:00
Clear
25°
2%
23:00
Clear
24°
2%
00:00
Clear
23°
2%
01:00
Clear
23°
1%
02:00
Clear
24°
1%
03:00
Clear
23°
1%
04:00
Clear
26°
1%
05:00
Clear
27°
1%
06:00
Smoky haze
27°
1%
07:00
Smoky haze
28°
0%
08:00
Sunny
27°
0%
09:00
Sunny
28°
0%
10:00
Sunny
29°
1%
11:00
Sunny
31°
1%
12:00
Sunny
32°
0%
13:00
Sunny
33°
1%
14:00
Sunny
34°
0%
15:00
Sunny
34°
0%
16:00
Sunny
34°
0%
17:00
Sunny
33°
1%
18:00
Sunny
32°
1%
19:00
Sunny
30°
1%

14-Day Forecast for Altadena

Sun, Aug 23
Sunny Sunny
41° / 22°
Mon, Aug 24
Sunny Sunny
34° / 23°
Tue, Aug 25
Sunny Sunny
36° / 28°
Wed, Aug 26
Sunny Sunny
36° / 29°
Thu, Aug 27
Sunny Sunny
35° / 27°
Fri, Aug 28
Overcast Overcast
34° / 28°
Sat, Aug 29
Sunny Sunny
35° / 28°
Sun, Aug 30
Overcast Overcast
32° / 23°
Mon, Aug 31
Overcast Overcast
29° / 22°
Tue, Sep 01
Sunny Sunny
33° / 25°
Wed, Sep 02
Sunny Sunny
36° / 28°
Thu, Sep 03
Sunny Sunny
39° / 31°
Fri, Sep 04
Overcast Overcast
34° / 26°
Sat, Sep 05
Overcast Overcast
30° / 24°

Additional Forecasts for Altadena

Air Quality

💨 US EPA Index 2 (Moderate)
CO (Carbon Monoxide) 146.0 μg/m³
O₃ (Ozone) 120.0 μg/m³
NO₂ (Nitrogen Dioxide) 21.3 μg/m³
SO₂ (Sulphur Dioxide) 7.2 μg/m³
PM2.5 (Fine particles) 25.5 μg/m³
PM10 (Coarse particles) 28.4 μg/m³

Historical Weather

Weather Forecasts for Other Cities in United States

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Best Time to Be Outside in Altadena Tomorrow

There is no good daylight window left in Altadena today. Tomorrow, the most comfortable window looks like 07:00 to 10:00, when it is around 27°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in Altadena

What is the temperature in Altadena right now?

Altadena is sitting at 33°C (91°F) right now, sunny (feels like 32°C).

What's the weather like in Altadena right now?

Current weather in Altadena: Sunny, humidity 29%, wind 8 km/h SSW.

What is today's forecast for Altadena?

Today in Altadena: high 41°C, low 22°C, sunny. Chance of rain: 1%.

What is the 7-day weather forecast for Altadena?

Daily highs and lows for Altadena:

  • 2026-08-23: 41°C / 22°C
  • 2026-08-24: 34°C / 23°C
  • 2026-08-25: 36°C / 28°C
  • 2026-08-26: 36°C / 29°C
  • 2026-08-27: 35°C / 27°C
  • 2026-08-28: 34°C / 28°C
  • 2026-08-29: 35°C / 28°C
Is it going to rain in Altadena today?

There is a 1% chance of rain in Altadena today.

What is the wind speed in Altadena right now?

Wind in Altadena is currently 8 km/h (5 mph) from the SSW.

What is the UV index in Altadena right now?

The UV index in Altadena is currently 0 (low). Sun protection is recommended when the index is 3 or higher.

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