Today | Weather | Monday, December 29, 2025

Weather in Carlsbad, California

09:14 PM
Now
Cloudy Night
55° F
Feels Like 54°
Precipitation 0 %
Wind 6 mph
Humidity 53 %
Today
Cloudy Night
Day 75°
Night 54°
Precipitation 0 %
Wind 5 mph

Carlsbad Weather Forecast Updated

27 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 29, 2024)
Cloudy Weather

Day

63°

Night

45°

Wind

4 mph

UV Index

3

Precipitation

0 %

Air Quality in Carlsbad

NOW
42 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.41 µg/m³
PM10 13.57 µg/m³
O3 0.045 ppm
NO2 2.6 ppb
SO2 0.5 ppb
CO 0.17 ppm
NH3 0.29 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)
PM2.56.41 µg/m³
PM1013.57 µg/m³
O388.87 µg/m³
NO24.92 µg/m³
SO21.18 µg/m³
CO194.61 µg/m³
NH30.29 µg/m³
NO0 µg/m³