Today | Weather | Tuesday, October 21, 2025

Weather in Arvada, Colorado

08:08 PM
Now
Cloudy Night
61° F
Feels Like 59°
Precipitation 0 %
Wind 5 mph
Humidity 21 %
Today
Night
Day 72°
Night 37°
Precipitation 0 %
Wind 5 mph

Arvada Weather Forecast Updated

45 minutes ago
Last updated on

Weather Forecast History

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

Partly Sunny with Showers

Day

66°

Night

45°

Wind

12 mph

UV Index

4

Precipitation

80

Air Quality in Arvada

NOW
31 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 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
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:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.50.98 µg/m³
PM101.24 µg/m³
O366.03 µg/m³
NO23.61 µg/m³
SO20.12 µg/m³
CO98.26 µg/m³
NH30.48 µg/m³
NO0 µg/m³