Today | Weather | Monday, September 22, 2025

Weather in Downey, California

10:23 AM

Now

73° F

Feels Like 77°

Precipitation 39 %

Wind 4 mph

UV Index (0 - 11+) 11

Humidity 75 %

Today

Day 90°

Night 66°

Precipitation 49 %

Wind 10

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.

Downey Weather Forecast Updated

43 minutes ago

Last updated on September 22, 2025 9:39 AM

Air quality in Downey

NOW

90 AQI

Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 28.31 µg/m³

PM10 28.94 µg/m³

O₃ 31.72 ppb

NO₂ 28.00 ppb

SO₂ 8.20 ppb

CO 377.79 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