Today | Weather | Monday, November 3, 2025

Weather in Westminster, Colorado

12:59 AM

Now

45° F

Feels Like 39°

Precipitation 0 %

Wind 7 mph

Humidity 52 %

Today

Day 55°

Night 43°

Precipitation 0 %

Wind 5 mph

UV Index (0 - 11+) 3

Westminster Weather Forecast Updated

Last updated on November 02, 2025 11:52 PM

Weather Forecast History

Last Year's Weather on This Day (November 3, 2024)

Day

54°

Night

32°

Wind

8 mph

Precipitation

100

Air Quality in Westminster

NOW

21 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 1.01 µg/m³

PM₁₀ 1.14 µg/m³

O₃ 0.023 ppm

NO₂ 2 ppb

SO₂ 0 ppb

CO 0.09 ppm

NH₃ 0.45 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 – 1.01 µg/m³

PM₁₀ – 1.14 µg/m³

O₃ – 44.82 µg/m³

NO₂ – 3.82 µg/m³

SO₂ – 0.04 µg/m³

CO – 97.87 µg/m³

NH₃ – 0.45 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast