Today | Weather | Saturday, May 30, 2026

Weather in Chula Vista, California

09:44 PM
Now
Cloudy Night
64° F
Feels Like 64°
Precipitation 0 %
Wind 5 mph
Humidity 80 %
Today
Cloudy Night
Day 70°
Night 61°
Precipitation 0 %
Wind 5 mph

Chula Vista Weather Forecast Updated

55 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 30, 2025)
Cloudy Weather

Day

73°

Night

61°

Wind

8 mph

UV Index

12

Precipitation

0 %

Air Quality in Chula Vista

NOW
39 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.23 µg/m³
PM10 22.46 µg/m³
O3 0.042 ppm
NO2 0.2 ppb
SO2 0.2 ppb
CO 0.09 ppm
NH3 0.02 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)
PM2.56.23 µg/m³
PM1022.46 µg/m³
O383.12 µg/m³
NO20.39 µg/m³
SO20.65 µg/m³
CO104.47 µg/m³
NH30.02 µg/m³
NO0 µg/m³