Bad Air Days in Caddo Parish, Louisiana: under 1 a Year

under 1 bad air day a year

Rare: among the cleanest-air counties EPA monitors. Ranked 810 of 996 monitored counties, where 1 is worst.

What makes them bad: mostly particles: smoke and dust (60% particle days).

When the bad days come in Caddo

Most bad days here fall in July and May and June. Averaged over 2016 to 2025.

Is a purifier worth it here?

Bad air days are rare here. A standard furnace filter is enough; no purifier needed for outdoor air.
On the odd bad day, check AirNow and keep windows shut.

Better or worse than it was

In 2000 to 2009 this county averaged 15 bad days a year; in 2016 to 2025, under 1. The air has improved. The worst recent year was 2018, with 2 bad days on 361 monitored days.

Date	AQI	Main pollutant
2018-07-01	128	PM2.5
2020-06-26	126	PM2.5
2018-07-16	109	PM2.5
2022-07-13	108	Ozone
2024-05-15	101	Ozone

Most days, not the worst ones

Across 3,566 monitored days from 2016 to 2025, the air in Caddo Parish rated Good on 78% of them, more often than the 72% typical of monitored counties, and Moderate on 22%. The median day sat at AQI 39; one day in ten went above 58.

The pollutant setting the AQI on an ordinary day here:

ozone74%2,641 days
fine particles (PM2.5)26%925 days

Caddo Parish by year

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	360	288	72	0	0	38	80
2024	357	273	83	1	0	41	101
2023	353	277	76	0	0	38	100
2022	363	274	88	1	0	40	108
2021	362	289	73	0	0	37	93
2020	349	289	59	1	0	36	126
2019	356	271	85	0	0	39	82
2018	361	267	92	2	0	39	128
2017	351	269	82	0	0	39	100
2016	354	271	83	0	0	38	84
2015	364	270	94	0	0	39	93
2014	352	269	83	0	0	38	100
2013	365	268	95	2	0	42	119
2012	363	234	124	5	1	43	185
2011	365	209	138	18	0	47	147
2010	363	233	119	11	0	44	143

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

Elsewhere in Louisiana

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.