Today | Weather | Friday, April 3, 2026

Active Weather Warnings

Red Flag Warning

Weather in Denver, Colorado

06:42 PM

Now

48° F

Feels Like 39°

Precipitation 37 %

Wind 15 mph

UV Index (0 - 11+) 0

Humidity 25 %

Today

Day 54°

Night 30°

Precipitation 40 %

Wind 15 mph

UV Index (0 - 11+) 7

Denver Weather Forecast Updated

30 minutes ago

Last updated on April 03, 2026 at 6:12 PM

Weather Forecast History

Last Year's Weather on This Day (April 3, 2025)

Day

43°

Night

30°

Wind

8 mph

UV Index

Precipitation

93 %

Air Quality in Denver

NOW

38 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 0.5 µg/m³

PM₁₀ 0.5 µg/m³

O₃ 0.041 ppm

NO₂ 0.1 ppb

SO₂ 0 ppb

CO 0.09 ppm

NH₃ 0.57 µg/m³

NO 0.02 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 – 0.5 µg/m³

PM₁₀ – 0.5 µg/m³

O₃ – 80.8 µg/m³

NO₂ – 0.25 µg/m³

SO₂ – 0.12 µg/m³

CO – 104.77 µg/m³

NH₃ – 0.57 µg/m³

NO – 0.02 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Denver

Severe Expected Likely

Red Flag Warning

Red Flag Warning issued April 3 at 2:08PM MDT until April 3 at 7:00PM MDT by NWS Denver CO

Apr 3, 2:08 PM → Apr 3, 7:00 PM

* AFFECTED AREA...Fire Weather Zones 238, 239, 240, 241, 242,
243, 244, 245, 246, 247, 248, 249, 250 and 251.

* TIMING...Until 7 PM MDT this evening.

* WINDS...Northwest 25 to 35 mph with gusts up to 50 mph.

* RELATIVE HUMIDITY...As low as 15 percent.

IMPACTS: Conditions will be favorable for rapid fire spread.
Avoid outdoor burning and any activity that may produce a
spark and start a wildfire.

+ Read More

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

Updated: Apr 3, 6:12 PM Source: NWS Alert