Today | Weather | Thursday, October 29, 2026
Active Weather Warnings

Weather in Chula Vista, California

11:18 PM
Now
Cloudy Night
66° F
Feels Like 64°
Precipitation 49 %
Wind 6 mph
Humidity 75 %
Today
Rainy Weather
Day 72°
Night 64°
Precipitation 80 %
Wind 5 mph

Chula Vista Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (October 29, 2025)
Cloudy Night

Day

88°

Night

54°

Wind

4 mph

Precipitation

0 %

Air Quality in Chula Vista

NOW
50 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.56 µg/m³
PM10 5.94 µg/m³
O3 0.054 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 1.56 µg/m³
PM10 – 5.94 µg/m³
O3 – 105.59 µg/m³
NO2 – 0.17 µg/m³
SO2 – 0.18 µg/m³
CO – 113.86 µg/m³
NH3 – 0 µg/m³
NO – 0 µg/m³

Weather Alerts and Warnings for Chula Vista

Minor Expected Likely

Coastal Flood Advisory

Coastal Flood Advisory issued October 29 at 1:21PM PDT until October 30 at 2:00PM PDT by NWS San Diego CA
Oct 29, 1:21 PM → Oct 30, 2:00 PM
WHAT: Minor coastal flooding.

WHERE: San Diego County Coastal Areas and Orange County
Coastal Areas.

WHEN: For the Coastal Flood Advisory, from 1 PM today to 2 PM
PDT Friday.

IMPACTS: Flooding of lots, parks, and roads with only
isolated road closures expected.

ADDITIONAL DETAILS: Coastal residents and managers of
infrastructure in the advisory area should prepare for rising
water and take appropriate action to protect life and property.
Highest tides will occur around noon on Friday. Observed high
tides are 1.3 to 1.6 feet above astronomical tide predictions.
+ Read More
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Updated: Oct 29, 9:50 PM Source: NWS Alert