Today | Weather | Monday, August 24, 2026
Active Weather Warnings

Weather in Greeley, Colorado

10:16 PM
Now
Cloudy Weather
70° F
Feels Like 66°
Precipitation 49 %
Wind 7 mph
Humidity 67 %
Today
Stormy Weather
Day 95°
Night 57°
Precipitation 65 %
Wind 6 mph

Greeley Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 24, 2025)
Sunny with a Chance of Thunderstorms

Day

75°

Night

59°

Wind

9 mph

UV Index

40

Precipitation

65 %

Air Quality in Greeley

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.7 µg/m³
PM10 3.47 µg/m³
O3 0.028 ppm
NO2 4.3 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0.49 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)
PM2.52.7 µg/m³
PM103.47 µg/m³
O355.06 µg/m³
NO28.08 µg/m³
SO20.28 µg/m³
CO111.87 µg/m³
NH30.49 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Greeley

Air Quality Alert

Air Quality Alert issued August 24 at 4:10PM MDT by NWS Denver CO
Aug 24, 4:10 PM Aug 25, 12:00 AM
The Colorado Department of Public Health and Environment has
issued the following...

WHAT...Ozone Action Day Alert.

WHERE...Douglas, Jefferson, Denver, western Arapahoe, western
Adams, Broomfield, Boulder, Larimer, and Weld Counties

WHEN...400 PM Monday August 24 to 1200 AM Tuesday August 25

IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor. Ozone is expected to reach the Unhealthy
for Sensitive Groups category on Monday, but will stay in the Good
to Moderate range on Tuesday. For Colorado air quality
conditions, forecasts, and advisories, visit:
https://www.colorado.gov/airquality/colorado_summary.aspx If
possible, please help us reduce ozone pollution by limiting
driving gas and diesel-powered vehicles until midnight, Monday
night, August 24, 2026. Colorado is also addressing ozone
pollution through state policies. For more information about
health impacts and how ozone pollution forms in Colorado, visit:
https://cdphe.colorado.gov/ozone- pollution-and-your-health

HEALTH INFORMATION...Increasing likelihood of respiratory symptoms
and breathing discomfort in active children and adults and people
with lung disease, such as asthma. Active children and adults, and
people with lung disease, such as asthma, should reduce prolonged
or heavy outdoor exertion.
Updated: Aug 24, 9:11 PM Source: NWS Alert