🇺🇸 Weather in Mission Viejo
Current Weather in Mission Viejo
Coastal Flood Advisory issued September 26 at 9:57PM PDT until September 30 at 5:00PM PDT by NWS San Diego CA
25°C
Feels like 26°C. Overcast.
Map Overlays:
Hourly Forecast for Mission Viejo
13:00
24°
18%
14:00
24°
19%
15:00
24°
19%
16:00
24°
18%
17:00
24°
18%
18:00
23°
18%
19:00
23°
19%
20:00
23°
19%
21:00
23°
18%
22:00
22°
20%
23:00
22°
20%
00:00
22°
20%
01:00
21°
20%
02:00
21°
8%
03:00
21°
8%
04:00
21°
7%
05:00
21°
7%
06:00
21°
7%
07:00
20°
6%
08:00
21°
6%
09:00
21°
5%
10:00
22°
4%
11:00
22°
4%
12:00
22°
4%
14-Day Forecast for Mission Viejo
2026-09-27
Overcast
25° /
22°
2026-09-28
Sunny
22° /
20°
2026-09-29
Sunny
23° /
20°
2026-09-30
Sunny
22° /
21°
2026-10-01
Sunny
24° /
20°
2026-10-02
Sunny
25° /
21°
2026-10-03
Sunny
26° /
22°
Additional Forecasts for Mission Viejo
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 128.0 μg/m³
O₃ (Ozone) 110.0 μg/m³
NO₂ (Nitrogen Dioxide) 0.8 μg/m³
SO₂ (Sulphur Dioxide) 1.5 μg/m³
PM2.5 (Fine particles) 12.3 μg/m³
PM10 (Coarse particles) 16.4 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in Mission Viejo — FAQ
Answers refreshed each request based on current conditions in Mission Viejo.
What is the weather like right now in Mission Viejo?
Right now in Mission Viejo, United States the temperature is 24.8°C (feels like 25.5°C), with overcast. Relative humidity is 65% and wind is 10.1 km/h.
What is today's high and low temperature in Mission Viejo?
Today's forecast high in Mission Viejo is 24.8°C and the overnight low is 21.9°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Mission Viejo today?
The chance of precipitation in Mission Viejo today is 19%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Mission Viejo differ from nearby cities?
Even short distances can change temperatures noticeably. Mission Viejo's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.