Rapides Parish, Louisiana air quality history

Daily Air Quality Index summaries from EPA monitors in Rapides, Louisiana, 1989–2025.

70%

Good days in 2024

Median daily AQI, 2024

Days above 100 in 2024

121

Days with an AQI in 2024 (of 366)

In 2024, EPA reported a daily Air Quality Index (AQI) for Rapides, Louisiana on 121 days. 85 of those days (70%) were in the Good range, and the median daily AQI was 39. That median is about the same as the typical monitored county in Louisiana (median 41 across 22 counties), and about the same as the typical monitored U.S. county (41). The main pollutant was fine particles (PM2.5) on 121 days. Across the years with fuller monitoring, the share of Good days rose: an average of 36% in 2002–2011 versus 76% in 2020–2024.

EPA did not report an AQI for every day of 2024 here (121 of 366 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

Years with fewer than 120 monitored days (2017, 2018, 2019, 2022, 2023, 2025…) are shown in the table but left out of comparisons and trend statements.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Good
Moderate
Unhealthy for Sensitive Groups
Unhealthy
Very Unhealthy
Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median daily AQI
90th-percentile daily AQI

Main pollutant by day, 2024

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

Pollutant	Days as main pollutant	Share of monitored days
Fine particles (PM2.5)	121	100%

Year-by-year data

Annual AQI summary by year
Year	Days with AQI	Good	Moderate	Unhealthy for Sensitive Groups	Median AQI	90th pct.	Max AQI	Main pollutant
2025	118	87	31	0	37	57	67	PM2.5
2024	121	85	35	1	39	56	102	PM2.5
2023	119	74	45	0	43	64	80	PM2.5
2022	119	85	33	1	38	57	105	PM2.5
2021	122	96	26	0	38	55	66	PM2.5
2020	121	95	25	1	34	56	103	PM2.5
2019	119	88	31	0	40	58	74	PM2.5
2018	119	84	35	0	41	61	92	PM2.5
2017	107	69	38	0	41	56	69	PM2.5
2016	102	68	34	0	45	55	66	PM2.5
2015	118	87	31	0	36	57	69	PM2.5
2014	290	121	168	1	52	63	106	PM2.5
2013	362	121	240	1	54	67	105	PM2.5
2012	362	62	300	0	57	70	90	PM2.5
2011	283	48	234	1	60	73	102	PM2.5
2010	119	70	49	0	46	62	79	PM2.5
2009	119	78	41	0	44	59	67	PM2.5
2008	116	65	51	0	48	61	76	PM2.5
2007	113	50	63	0	52	64	77	PM2.5
2006	122	55	67	0	52	73	90	PM2.5
2005	112	44	68	0	53	70	95	PM2.5
2004	113	64	49	0	48	67	96	PM2.5
2003	69	32	36	1	52	69	121	PM2.5
2002	121	55	65	1	52	65	111	PM2.5
2001	119	47	72	0	55	74	97	PM2.5
2000	114	28	86	0	56	75	97	PM2.5
1999	55	10	44	1	58	75	107	PM2.5
1997	56	54	2	0	20	30	69	PM10
1996	58	58	0	0	16	25	41	PM10
1995	58	58	0	0	19	34	47	PM10
1994	60	59	1	0	20	37	52	PM10
1993	60	59	1	0	17	33	56	PM10
1992	51	50	1	0	20	37	76	PM10
1991	58	57	1	0	17	34	63	PM10
1990	54	54	0	0	19	35	45	PM10
1989	26	25	1	0	23	39	53	PM10

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

All monitored counties in Louisiana

Source: U.S. EPA AirData, “Annual AQI by County” files for 1989–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem