Today | Weather | Wednesday, August 12, 2026

Weather in Grand Junction, Colorado

05:49 AM
Now
Cloudy Night
72° F
Feels Like 70°
Precipitation 14 %
Wind 6 mph
Humidity 46 %
Today
Stormy Weather
Day 91°
Night 63°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Grand Junction Weather Forecast Updated

57 minutes ago
Last updated on

Air Quality in Grand Junction

NOW
30 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.28 µg/m³
PM10 3.25 µg/m³
O3 0.033 ppm
NO2 0.6 ppb
SO2 0 ppb
CO 0.08 ppm
NH3 1.34 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)
PM2.52.28 µg/m³
PM103.25 µg/m³
O364.38 µg/m³
NO21.15 µg/m³
SO20.08 µg/m³
CO96.95 µg/m³
NH31.34 µg/m³
NO0 µg/m³