Davis, Utah Air Quality

Davis County, Utah (UT)

↑ Worseningover 10 years

Air Quality Grade

54/100

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 in this area has been declining over the past decade.

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	47	84	151	211	141	13	Ozone
2022	47	84	147	210	145	10	Ozone
2021	47	92	156	205	134	26	Ozone
2020	46	78	157	217	135	14	Ozone
2019	45	74	119	239	120	6	Ozone
2018	49	87	151	194	158	13	Ozone
2017	51	97	140	180	157	28	Ozone
2016	47	74	143	224	128	14	Ozone
2015	39	67	143	270	80	7	Ozone
2014	44	67	130	265	89	11	Ozone

What This Means for Davis County Residents

Davis, Utah has received an Air Quality Grade of C (54/100) based on a decade of EPA monitoring data. The current median AQI of 47 falls in the "Good" range.

Concerning trends show air quality has been declining, with the median AQI rising by 3 points over the monitoring period. This could be driven by increased development, wildfire smoke, or industrial activity.

The primary pollutant affecting this area is Ground-Level Ozone. Over the past 5 years, this area has averaged 14 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.