Salt Lake, Utah Air Quality

Salt Lake County, Utah (UT)

↑ Worseningover 10 years

Air Quality Grade

41/100

Current Median AQI

Moderate

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	54	90	154	149	200	16	Ozone
2022	60	98	147	101	236	28	Ozone
2021	59	108	177	122	195	48	Ozone
2020	54	93	214	143	200	23	PM2.5
2019	58	90	136	132	216	17	Ozone
2018	61	101	169	117	207	41	Ozone
2017	60	104	156	131	190	44	Ozone
2016	53	90	158	165	174	27	Ozone
2015	54	92	154	163	175	27	Ozone
2014	49	81	155	201	142	22	Ozone

What This Means for Salt Lake County Residents

Salt Lake, Utah has received an Air Quality Grade of D (41/100) based on a decade of EPA monitoring data. The current median AQI of 54 falls in the "Moderate" range.

Concerning trends show air quality has been declining, with the median AQI rising by 5 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 26 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.