Today | Weather | Friday, August 15, 2025

Weather in Chula Vista, California

07:22 PM
Now
Cloudy WeatherCloudy weather, overcast skies with clouds.
68° F
Feels Like 66°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 6
Humidity 79 %
Today
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 72°
Night 64°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Other:

Clouds giving way to some sunshine and cool.

Chula Vista Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 15, 2024)

Cloudy WeatherCloudy weather, overcast skies with clouds.

Day

77°

Night

64°

Wind

6 mph

UV Index

10

Precipitation

0

Air quality in Chula Vista

NOW
54 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 5.63 µg/m³
PM10 17.49 µg/m³
O₃ 24.16 ppb
NO₂ 5.56 ppb
SO₂ 0.78 ppb
CO 120.36 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.