❮
Today Tomorrow Hourly 7 days 30 days February
❯
Today | Weather | Tuesday, February 24, 2026
Active Weather Warnings

Weather in Greeley, Colorado

02:47 PM
Now
Cloudy Weather
66° F
Feels Like 64°
Precipitation 43 %
Wind 9 mph
UV Index (0 - 11+) 1
Humidity 17 %
Today
Partly Sunny with Showers
Day 70°
Night 37°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 4

Greeley Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 24, 2025)
Partly Sunny with Showers

Day

66°

Night

28°

Wind

11 mph

UV Index

4

Precipitation

49 %

Air Quality in Greeley

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.5 µg/m³
PM10 0.54 µg/m³
O3 0.031 ppm
NO2 0.4 ppb
SO2 0.1 ppb
CO 0.07 ppm
NH3 0.06 µg/m³
NO 0.09 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)
PM2.5 – 0.5 µg/m³
PM10 – 0.54 µg/m³
O3 – 60.55 µg/m³
NO2 – 0.69 µg/m³
SO2 – 0.19 µg/m³
CO – 79.19 µg/m³
NH3 – 0.06 µg/m³
NO – 0.09 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for Greeley

Severe Expected Likely

Red Flag Warning

Red Flag Warning issued February 24 at 11:57AM MST until February 24 at 5:00PM MST by NWS Denver CO
Feb 24, 11:57 AM → Feb 24, 5:00 PM
The National Weather Service in Denver has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from 10 AM to 6 PM MST Wednesday.

* AFFECTED AREA...Fire Weather Zones 238, 239, 240, 242, 243 and
248.

* TIMING...For the first Red Flag Warning, until 5 PM MST this
afternoon. For the second Red Flag Warning, from 10 AM to 6 PM
MST Wednesday.

* WINDS...West 25 to 35 mph with gusts up to 55 mph.

* RELATIVE HUMIDITY...As low as 8 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: Feb 24, 1:40 PM Source: NWS Alert