Today | Weather | Thursday, August 21, 2025
Air Quality Alert (Issued when air pollution levels are unhealthy, especially for sensitive groups.)

Weather in Arvada, Colorado

06:15 PM
Now
Cloudy WeatherCloudy weather, overcast skies with clouds.
93° F
Feels Like 91°
Precipitation 7 %
Wind 8 mph
UV Index (0 - 11+) 11
Humidity 16 %
Today
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 95°
Night 64°
Precipitation 25 %
Wind 6 mph
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.

Other:

Sunny to partly overcast and hot; likely danger of dehydration and heatstroke while doing strenuous activities.

Arvada Weather Forecast Updated

16 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 21, 2024)

Day

93°

Night

66°

Air quality in Arvada

NOW
100 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.44 µg/m³
PM10 5.68 µg/m³
O₃ 73.77 ppb
NO₂ 1.50 ppb
SO₂ 0.55 ppb
CO 114.35 ppb
PM2.5 – 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.