Today | Weather | Tuesday, October 21, 2025

Weather in Arvada, Colorado

08:08 PM

Now

61° F

Feels Like 59°

Precipitation 0 %

Wind 5 mph

Humidity 21 %

Today

Day 72°

Night 37°

Precipitation 0 %

Wind 5 mph

Arvada Weather Forecast Updated

45 minutes ago

Last updated on October 21, 2025 7:23 PM

Weather Forecast History

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

Day

66°

Night

45°

Wind

12 mph

UV Index

Precipitation

Air Quality in Arvada

NOW

31 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 0.98 µg/m³

PM₁₀ 1.24 µg/m³

O₃ 0.034 ppm

NO₂ 1.9 ppb

SO₂ 0 ppb

CO 0.09 ppm

NH₃ 0.48 µg/m³

NO 0 µg/m³

PM_2.5 – 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)

PM_2.5 – 0.98 µg/m³

PM₁₀ – 1.24 µg/m³

O₃ – 66.03 µg/m³

NO₂ – 3.61 µg/m³

SO₂ – 0.12 µg/m³

CO – 98.26 µg/m³

NH₃ – 0.48 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast