Bad Air Days in Lee County, Iowa

Not enough data

EPA monitors in Lee County ran on too few days between 2016 and 2025 to give a fair yearly count (about 29% of days covered). Neighbouring counties below are a better guide.

Is a purifier worth it here?

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

Better or worse than it was

Date	AQI	Main pollutant
2023-06-29	97	PM2.5
2022-12-07	87	PM2.5
2022-11-22	81	PM2.5
2018-02-13	78	PM2.5
2018-12-10	78	PM2.5

The air on a normal day

Across 850 monitored days from 2016 to 2023, the air in Lee County rated Good on 64% of them, less often than the 72% typical of monitored counties, and Moderate on 36%. The median day sat at AQI 42; one day in ten went above 60.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)100%850 days

Every recent year on file

Year	Days monitored	Good	Moderate	Over 100	Median AQI	Highest AQI
2023	60	36	24	0	47	97
2022	106	73	33	0	41	87
2021	101	63	38	0	42	73
2020	118	83	35	0	40	76
2019	120	80	40	0	39	73
2018	121	70	51	0	45	78
2017	111	71	40	0	43	69
2016	113	71	42	0	42	74
2015	118	81	37	0	44	84
2014	121	62	59	0	48	98
2013	110	50	60	0	52	90
2012	111	49	62	0	52	83
2011	117	49	68	0	52	83
2010	115	51	62	2	53	115

Elsewhere in Iowa

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.