Clear Creek, Colorado Air Quality

Clear Creek County, Colorado (CO)

→ Stableover 10 years

Air Quality Grade

57/100

Current Median AQI

Good

5-Year Avg AQI

10-Year Change

Worse

Unhealthy Days/yr

5-year average

Ozone

Primary Pollutant

Ground-Level Ozone

10-Year AQI Trend

The solid line shows the median AQI each year. The dashed line shows the 90th percentile (worst 10% of days).

Air Quality Day Breakdown

Number of days per year in each EPA AQI category. Green = Good (AQI 0-50), Yellow = Moderate (51-100), Orange = Unhealthy for Sensitive Groups (101-150), Red = Unhealthy or worse (151+).

Year-by-Year Data

Year	Median AQI	90th Pct	Max AQI	Good Days	Moderate	Unhealthy+	Pollutant
2023	49	84	136	204	147	8	Ozone
2022	47	74	126	244	110	5	Ozone
2021	49	93	154	206	127	24	Ozone
2020	49	84	156	140	87	12	Ozone
2019	47	74	126	183	109	2	Ozone
2018	51	100	164	145	118	28	Ozone
2017	50	74	140	173	137	4	Ozone
2016	47	77	154	210	94	7	Ozone
2015	48	74	140	182	107	6	Ozone
2014	47	90	150	169	83	15	Ozone

What This Means for Clear Creek County Residents

Clear Creek, Colorado has received an Air Quality Grade of C (57/100) based on a decade of EPA monitoring data. The current median AQI of 49 falls in the "Good" range.

The primary pollutant affecting this area is Ground-Level Ozone. Over the past 5 years, this area has averaged 10 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.