Today | Weather | Thursday, February 5, 2026

Weather in Chula Vista, California

05:34 PM
Now
Cloudy Night
63° F
Feels Like 63°
Precipitation 0 %
Wind 7 mph
Humidity 68 %
Today
Cloudy Weather
Day 73°
Night 55°
Precipitation 2 %
Wind 7 mph
UV Index (0 - 11+) 4

Chula Vista Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 5, 2025)
Cloudy Weather

Day

68°

Night

55°

Wind

7 mph

UV Index

1

Precipitation

3 %

Air Quality in Chula Vista

NOW
108 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 38.78 µg/m³
PM10 66.75 µg/m³
O3 0.057 ppm
NO2 0.3 ppb
SO2 0.2 ppb
CO 0.19 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.538.78 µg/m³
PM1066.75 µg/m³
O3112.3 µg/m³
NO20.56 µg/m³
SO20.45 µg/m³
CO215.51 µg/m³
NH30 µg/m³
NO0 µg/m³