Bad Air Days in Kenai Peninsula, Alaska

Not enough data

EPA monitors in Kenai Peninsula ran on too few days between 2016 and 2025 to give a fair yearly count (about 31% of days covered). Neighbouring counties below are a better guide.

What actually helps here

EPA monitors here ran too few days to give a fair yearly count. Use AirNow for today's air.

The worst days on file

The worst recent year was 2019, with 1 bad day on 118 monitored days.

Date	AQI	Main pollutant
2019-08-22	140	PM2.5
2022-06-28	73	PM2.5
2019-06-29	60	PM2.5
2019-08-31	59	PM2.5
2019-08-25	54	PM2.5

An ordinary day in Kenai Peninsula

Across 1,133 monitored days from 2016 to 2025, the air in Kenai Peninsula rated Good on 99% of them, more often than the 72% typical of monitored counties, and Moderate on 1%. The median day sat at AQI 9; one day in ten went above 19.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)100%1,133 days

Kenai Peninsula by year

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	102	102	0	0	0	9	28
2024	122	122	0	0	0	8	42
2023	119	119	0	0	0	10	29
2022	120	119	1	0	0	9	73
2021	121	121	0	0	0	9	41
2020	122	120	2	0	0	10	53
2019	118	111	6	1	0	11	140
2018	120	120	0	0	0	10	36
2017	67	67	0	0	0	8	30
2016	122	122	0	0	0	9	34
2015	40	40	0	0	0	7	22
2014	199	179	18	2	2	12	197
2013	285	276	8	1	0	8	111
2012	356	353	3	0	0	10	89
2011	166	166	0	0	0	11	48
2010	121	121	0	0	0	7	23

*2025 may be a partial year in EPA's file.

Alaska compared

How this is counted

A bad air day is a day the county's daily AQI from EPA AirData went above 100, the level where EPA tells children, older adults and people with asthma or heart disease to cut back outdoors. Monitors do not run every day, so yearly counts are scaled to 365 days. This is the record, not today's air: for that, check AirNow. More on the method in how the county numbers are made, on the AQI 100 line in what counts as a bad air day.