Today | Weather | Saturday, September 20, 2025

Weather in Carlsbad, California

01:25 AM

Now

64° F

Feels Like 66°

Precipitation 0 %

Wind 2 mph

Humidity 93 %

Today

Day 81°

Night 63°

Precipitation 0 %

Wind 13

UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Carlsbad Weather Forecast Updated

Last updated on September 20, 2025 12:20 AM

Air quality in Carlsbad

NOW

53 AQI

Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 13.65 µg/m³

PM10 18.64 µg/m³

O₃ 19.57 ppb

NO₂ 12.49 ppb

SO₂ 0.67 ppb

CO 183.92 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

View Hourly Air Quality Forecast