Today | Weather | Monday, January 19, 2026

Weather in Carlsbad, California

01:38 AM
Now
Night
43° F
Feels Like 43°
Precipitation 0 %
Wind 2 mph
Humidity 94 %
Today
Cloudy Weather
Day 72°
Night 39°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3

Carlsbad Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 19, 2025)
Cloudy Weather

Day

61°

Night

41°

Wind

6 mph

UV Index

3

Precipitation

25 %

Air Quality in Carlsbad

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

Pollutant Concentrations:

PM2.5 39.47 µg/m³
PM10 51.48 µg/m³
O3 0.050 ppm
NO2 0.8 ppb
SO2 0.3 ppb
CO 0.26 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)
PM2.539.47 µg/m³
PM1051.48 µg/m³
O397.73 µg/m³
NO21.44 µg/m³
SO20.7 µg/m³
CO295.82 µg/m³
NH30 µg/m³
NO0 µg/m³