Today | Weather | Tuesday, August 4, 2026

Weather in Carlsbad, California

09:32 PM
Now
Cloudy Night
70° F
Feels Like 70°
Precipitation 0 %
Wind 2 mph
Humidity 81 %
Today
Cloudy Night
Day 79°
Night 66°
Precipitation 0 %
Wind 1 mph

Carlsbad Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 4, 2025)
Cloudy Night

Day

75°

Night

59°

Wind

2 mph

Precipitation

0 %

Air Quality in Carlsbad

NOW
34 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.2 µg/m³
PM10 26.42 µg/m³
O3 0.037 ppm
NO2 0.2 ppb
SO2 0.2 ppb
CO 0.06 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)
PM2.58.2 µg/m³
PM1026.42 µg/m³
O372.57 µg/m³
NO20.35 µg/m³
SO20.43 µg/m³
CO74.05 µg/m³
NH30 µg/m³
NO0 µg/m³