Today | Weather | Thursday, March 12, 2026

Active Weather Warnings

Weather in Denver, Colorado

07:26 AM

Now

37° F

Feels Like 30°

Precipitation 0 %

Wind 9 mph

Humidity 36 %

Today

Day 70°

Night 45°

Precipitation 0 %

Wind 17 mph

UV Index (0 - 11+) 5

Denver Weather Forecast Updated

14 minutes ago

Last updated on March 12, 2026 at 7:11 AM

Weather Forecast History

Last Year's Weather on This Day (March 12, 2025)

Day

68°

Night

36°

Wind

6 mph

UV Index

Precipitation

0 %

Air Quality in Denver

NOW

41 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 0.58 µg/m³

PM₁₀ 0.69 µg/m³

O₃ 0.045 ppm

NO₂ 0.4 ppb

SO₂ 0 ppb

CO 0.09 ppm

NH₃ 1.75 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 – 0.58 µg/m³

PM₁₀ – 0.69 µg/m³

O₃ – 87.65 µg/m³

NO₂ – 0.81 µg/m³

SO₂ – 0.04 µg/m³

CO – 107.91 µg/m³

NH₃ – 1.75 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Denver

Severe Future Possible

Fire Weather Watch

Fire Weather Watch issued March 10 at 11:54PM MDT until March 12 at 8:00PM MDT by NWS Denver CO

Mar 12, 10:00 AM → Mar 12, 8:00 PM

* AFFECTED AREA...Fire Weather Zones 240, 242, 243, 244, 245,
248, 249, 250 and 251.

* TIMING...From Thursday morning through Thursday evening.

* WINDS...West 20 to 30 mph with gusts up to 45 mph.

* RELATIVE HUMIDITY...As low as 13 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Updated: Mar 11, 10:13 AM Source: NWS Alert

Severe Expected Likely

Red Flag Warning

Red Flag Warning issued March 11 at 11:23PM MDT until March 12 at 9:00PM MDT by NWS Denver CO

Mar 12, 11:00 AM → Mar 12, 9:00 PM

The National Weather Service in Denver has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Friday morning through Friday evening.

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

* TIMING...For the Red Flag Warning, from 11 AM to 9 PM MDT
Thursday. For the Fire Weather Watch, from Friday morning
through Friday evening.

* WINDS...On Thursday, west winds 30 to 40 mph with gusts 45 to 70
mph for the northern plains and locations west of I-25, and west
winds 15 to 25 mph with gusts up to 45 mph elsewhere. On Friday,
west winds 20 to 25 mph with gusts 30 to 50 mph, strongest near
the Cheyenne Ridge.

* RELATIVE HUMIDITY...12 to 18 percent, driest roughly along and
south of I-70 and around the Denver metro.

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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Updated: Mar 12, 5:30 AM Source: NWS Alert