Bad Air Days in Volusia County, Florida: under 1 a Year

under 1 bad air days a year

Rare: among the cleanest-air counties EPA monitors. Ranked 946 of 996 monitored counties, where 1 is worst.

What makes them bad: mostly particles: smoke and dust (100% particle days).

Which months to watch

Most bad days here fall in October. Averaged over 2016 to 2025.

What actually helps 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.

The record for Volusia

In 2000 to 2009 this county averaged 4 bad days a year; in 2016 to 2025, under 1. The air has improved. The worst recent year was 2023, with 1 bad day on 365 monitored days.

Date	AQI	Main pollutant
2023-10-03	118	PM2.5
2017-05-30	95	PM2.5
2017-05-10	93	Ozone
2022-03-04	93	Ozone
2023-10-02	91	PM2.5

Most days, not the worst ones

Across 3,608 monitored days from 2016 to 2025, the air in Volusia County rated Good on 75% of them, close to the 72% typical of monitored counties, and Moderate on 25%. The median day sat at AQI 43; one day in ten went above 56.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)59%2,129 days
ozone41%1,478 days

Year by year

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	365	297	68	0	0	41	90
2024	360	293	67	0	0	39	76
2023	365	262	102	1	0	44	118
2022	365	242	123	0	0	45	93
2021	363	223	140	0	0	47	77
2020	362	252	110	0	0	44	77
2019	350	274	76	0	0	41	80
2018	365	291	74	0	0	41	80
2017	354	280	74	0	0	41	95
2016	359	276	83	0	0	42	90
2015	365	295	70	0	0	40	83
2014	365	244	120	1	0	43	108
2013	365	271	94	0	0	42	90
2012	366	230	135	1	0	46	101
2011	365	217	146	2	1	46	153
2010	365	216	148	1	0	46	101

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

Florida 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.