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Weather in Tustin, United States 🇺🇸

Current Weather in Tustin

Heat Advisory issued August 20 at 1:31AM PDT until August 20 at 8:00PM PDT by NWS San Diego CA
Overcast
31°C
Feels like 32°C. Overcast.
🌬️ 12 km/h WSW
💧 50% Humidity
🧭 1012 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 6.3
🌡️ Dew Point: 19°C
🌅 Sunrise: 06:16 AM
🌇 Sunset: 07:32 PM
Map Overlays:

In Tustin right now it is 31°C and overcast, feeling like 32°C. Expect 50% humidity and winds of about 12 km/h, and the UV index is 6 (high). Looking ahead, Tustin should sit between roughly 20°C and 35°C over the coming days. ⚠️ Heat Advisory issued August 20 at 1:31AM PDT until August 20 at 8:00PM PDT by NWS San Diego CA

Hourly Forecast for Tustin

16:00
Sunny
33°
2%
17:00
Sunny
31°
2%
18:00
Cloudy
27°
9%
19:00
Cloudy
24°
18%
20:00
Partly Cloudy
22°
14%
21:00
Overcast
22°
26%
22:00
Cloudy
22°
20%
23:00
Partly Cloudy
22°
15%
00:00
Clear
21°
13%
01:00
Clear
21°
15%
02:00
Clear
21°
15%
03:00
Clear
23°
4%
04:00
Clear
23°
5%
05:00
Clear
23°
5%
06:00
Partly Cloudy
23°
9%
07:00
Overcast
24°
14%
08:00
Patchy rain nearby
26°
9%
09:00
Sunny
27°
2%
10:00
Partly Cloudy
30°
4%
11:00
Patchy rain nearby
31°
5%
12:00
Overcast
33°
9%
13:00
Overcast
33°
9%
14:00
Overcast
33°
9%
15:00
Overcast
32°
9%

14-Day Forecast for Tustin

Thu, Aug 20
Overcast Overcast
33° / 20°
Fri, Aug 21
Sunny Sunny
33° / 21°
Sat, Aug 22
Sunny Sunny
35° / 24°
Sun, Aug 23
Sunny Sunny
35° / 24°
Mon, Aug 24
Sunny Sunny
35° / 24°
Tue, Aug 25
Sunny Sunny
35° / 24°
Wed, Aug 26
Sunny Sunny
35° / 25°
Thu, Aug 27
Sunny Sunny
36° / 25°
Fri, Aug 28
Sunny Sunny
34° / 25°
Sat, Aug 29
Sunny Sunny
33° / 23°
Sun, Aug 30
Sunny Sunny
32° / 22°
Mon, Aug 31
Sunny Sunny
31° / 21°
Tue, Sep 01
Sunny Sunny
33° / 21°
Wed, Sep 02
Sunny Sunny
32° / 21°

Additional Forecasts for Tustin

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 106.0 μg/m³
O₃ (Ozone) 86.0 μg/m³
NO₂ (Nitrogen Dioxide) 4.2 μg/m³
SO₂ (Sulphur Dioxide) 1.2 μg/m³
PM2.5 (Fine particles) 12.1 μg/m³
PM10 (Coarse particles) 17.8 μg/m³

Historical Weather

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Best Time to Be Outside in Tustin Tomorrow

There is no good daylight window left in Tustin today. Tomorrow, the most comfortable window looks like 07:00 to 10:00, when it is around 26°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in Tustin

What is the temperature in Tustin right now?

It is currently 31°C (87°F) in Tustin, overcast (feels like 32°C).

What's the weather like in Tustin right now?

Current weather in Tustin: Overcast, humidity 50%, wind 12 km/h WSW.

What is today's forecast for Tustin?

Today in Tustin: high 33°C, low 20°C, overcast. Chance of rain: 12%.

What is the 7-day weather forecast for Tustin?

Daily highs and lows for Tustin:

  • 2026-08-20: 33°C / 20°C
  • 2026-08-21: 33°C / 21°C
  • 2026-08-22: 35°C / 24°C
  • 2026-08-23: 35°C / 24°C
  • 2026-08-24: 35°C / 24°C
  • 2026-08-25: 35°C / 24°C
  • 2026-08-26: 35°C / 25°C
Is it going to rain in Tustin today?

There is a 12% chance of rain in Tustin today.

What is the wind speed in Tustin right now?

Wind in Tustin is currently 12 km/h (8 mph) from the WSW.

What is the UV index in Tustin right now?

The UV index in Tustin is currently 6.3 (high). Sun protection is recommended when the index is 3 or higher.

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