Klamath, Oregon Air Quality

Klamath County, Oregon (OR)

→ Stableover 10 years

Air Quality Grade

50/100

Current Median AQI

Good

5-Year Avg AQI

-3

10-Year Change

Better

Unhealthy Days/yr

5-year average

PM2.5

Primary Pollutant

Fine Particulate Matter (PM2.5)

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	39	75	181	216	137	12	PM2.5
2022	38	70	163	222	139	4	PM2.5
2021	54	134	237	162	153	50	PM2.5
2020	52	124	763	172	148	46	PM2.5
2019	39	78	126	230	129	6	PM2.5
2018	49	114	249	184	136	40	PM2.5
2017	39	92	279	215	120	26	PM2.5
2016	41	67	92	250	113	0	PM2.5
2015	42	77	205	213	139	13	PM2.5
2014	42	72	136	222	139	4	PM2.5

What This Means for Klamath County Residents

Klamath, Oregon has received an Air Quality Grade of C (50/100) based on a decade of EPA monitoring data. The current median AQI of 39 falls in the "Good" range.

The primary pollutant affecting this area is Fine Particulate Matter (PM2.5). Over the past 5 years, this area has averaged 24 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.