Air quality index58Moderate

Acceptable for most people; unusually sensitive people should take it easier outdoors.

Next 24 hours

US AQI

71Now
59
47
4711 PM
47
47
532 AM
59
65
635 AM
61
59
558 AM
51
47
5411 AM
60
67
662 PM
65
65
605 PM
54
49

Air quality outlook

Worst hour each day

Today98Moderate
Fri 967Moderate
Sat 1051Moderate
Sun 11500Hazardous
Mon 1243Good

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

Live radar

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About Centennial weather

Centennial is in Arapahoe County, Colorado, United States at 39.58°, -104.88°. Right now it’s 74° and haze; today’s high is 82° with a 1% chance of rain.

Colorado's climate is defined by dramatic elevation changes, from the eastern plains at around 3,500 feet to over 50 peaks exceeding 14,000 feet in the Rocky Mountains. Denver, known as the Mile High City, enjoys over 300 days of sunshine per year and has a semi-arid climate with low humidity. Temperature swings of 40 degrees or more in a single day are not uncommon along the Front Range.