Today | Weather | Wednesday, March 18, 2026

Weather in Denver, Colorado

10:27 PM
Now
Cloudy Night
64° F
Feels Like 63°
Precipitation 0 %
Wind 8 mph
Humidity 17 %
Today
Cloudy Night
Day 82°
Night 46°
Precipitation 0 %
Wind 8 mph

Denver Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 18, 2025)
Partly Sunny with Showers

Day

63°

Night

30°

Wind

15 mph

UV Index

5

Precipitation

55 %

Air Quality in Denver

NOW
27 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.98 µg/m³
PM10 1.23 µg/m³
O3 0.029 ppm
NO2 1.8 ppb
SO2 0 ppb
CO 0.09 ppm
NH3 1.61 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
PM101.23 µg/m³
O356.28 µg/m³
NO23.36 µg/m³
SO20.03 µg/m³
CO107.98 µg/m³
NH31.61 µg/m³
NO0 µg/m³