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Hourly Weather | Today › Tuesday, February 24, 2026
Active Weather Warnings
Greeley, Colorado
5 PM
Cloudy Weather
70°
Feels Like 66°
40
Humidity: 22%
UV Index: 0
Wind: 9 mph
6 PM
Cloudy Night
64°
Feels Like 61°
28
Humidity: 24%
UV Index: 0
Wind: 9 mph
7 PM
Cloudy Weather
61°
Feels Like 55°
14
Humidity: 28%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Weather
55°
Feels Like 52°
14
Humidity: 34%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
50°
Feels Like 46°
14
Humidity: 41%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Weather
45°
Feels Like 39°
14
Humidity: 51%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Weather
43°
Feels Like 37°
14
Humidity: 57%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 PM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.54 µg/m³
  • PM10: 0.69 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.79 µg/m³
  • PM10: 1.07 µg/m³
  • O3: 0.027 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.28 µg/m³
  • PM10: 1.77 µg/m³
  • O3: 0.025 ppm
  • NO2: 3.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.76 µg/m³
  • PM10: 2.44 µg/m³
  • O3: 0.024 ppm
  • NO2: 4.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.1 µg/m³
  • PM10: 2.9 µg/m³
  • O3: 0.024 ppm
  • NO2: 4.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.3 µg/m³
  • PM10: 3.17 µg/m³
  • O3: 0.024 ppm
  • NO2: 4.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.3 µg/m³
  • PM10: 3.15 µg/m³
  • O3: 0.025 ppm
  • NO2: 4.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Current Real-Time Air Quality Report

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, 3:20 PM Source: NWS Alert