EnviroNearby

Duval County, Florida air quality history

Daily Air Quality Index summaries from EPA monitors in Duval, Florida, 1980–2025.

48%
Good days in 2025
51
Median daily AQI, 2025
4
Days above 100 in 2025
365
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Duval, Florida on 365 days. 175 of those days (48%) were in the Good range, and the median daily AQI was 51. That median is higher than the typical monitored county in Florida (median 41 across 38 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 290 days. Across the years with fuller monitoring, the share of Good days fell: an average of 63% in 1980–1982 versus 48% in 2023–2025.

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.

Share of monitored days in each AQI category, by year0%25%50%75%100%1980: Good 195 of 366 days1980: Moderate 144 of 366 days1980: Unhealthy for Sensitive Groups 19 of 366 days1980: Unhealthy 7 of 366 days1980: Very Unhealthy 1 of 366 days19801981: Good 215 of 365 days1981: Moderate 131 of 365 days1981: Unhealthy for Sensitive Groups 17 of 365 days1981: Unhealthy 2 of 365 days1982: Good 276 of 365 days1982: Moderate 75 of 365 days1982: Unhealthy for Sensitive Groups 12 of 365 days1982: Unhealthy 2 of 365 days1983: Good 263 of 365 days1983: Moderate 90 of 365 days1983: Unhealthy for Sensitive Groups 9 of 365 days1983: Unhealthy 3 of 365 days1984: Good 249 of 366 days1984: Moderate 108 of 366 days1984: Unhealthy for Sensitive Groups 7 of 366 days1984: Unhealthy 2 of 366 days1985: Good 280 of 365 days1985: Moderate 71 of 365 days1985: Unhealthy for Sensitive Groups 13 of 365 days1985: Very Unhealthy 1 of 365 days19851986: Good 264 of 365 days1986: Moderate 80 of 365 days1986: Unhealthy for Sensitive Groups 21 of 365 days1987: Good 228 of 365 days1987: Moderate 105 of 365 days1987: Unhealthy for Sensitive Groups 27 of 365 days1987: Unhealthy 4 of 365 days1987: Very Unhealthy 1 of 365 days1988: Good 232 of 366 days1988: Moderate 101 of 366 days1988: Unhealthy for Sensitive Groups 30 of 366 days1988: Unhealthy 3 of 366 days1989: Good 264 of 365 days1989: Moderate 83 of 365 days1989: Unhealthy for Sensitive Groups 14 of 365 days1989: Unhealthy 4 of 365 days1990: Good 241 of 365 days1990: Moderate 102 of 365 days1990: Unhealthy for Sensitive Groups 21 of 365 days1990: Unhealthy 1 of 365 days19901991: Good 316 of 365 days1991: Moderate 39 of 365 days1991: Unhealthy for Sensitive Groups 10 of 365 days1992: Good 297 of 366 days1992: Moderate 52 of 366 days1992: Unhealthy for Sensitive Groups 15 of 366 days1992: Unhealthy 2 of 366 days1993: Good 274 of 365 days1993: Moderate 69 of 365 days1993: Unhealthy for Sensitive Groups 20 of 365 days1993: Unhealthy 2 of 365 days1994: Good 306 of 365 days1994: Moderate 48 of 365 days1994: Unhealthy for Sensitive Groups 10 of 365 days1994: Unhealthy 1 of 365 days1995: Good 294 of 365 days1995: Moderate 59 of 365 days1995: Unhealthy for Sensitive Groups 11 of 365 days1995: Unhealthy 1 of 365 days19951996: Good 282 of 366 days1996: Moderate 72 of 366 days1996: Unhealthy for Sensitive Groups 11 of 366 days1996: Unhealthy 1 of 366 days1997: Good 278 of 365 days1997: Moderate 69 of 365 days1997: Unhealthy for Sensitive Groups 14 of 365 days1997: Unhealthy 4 of 365 days1998: Good 267 of 364 days1998: Moderate 69 of 364 days1998: Unhealthy for Sensitive Groups 18 of 364 days1998: Unhealthy 8 of 364 days1998: Very Unhealthy 2 of 364 days1999: Good 201 of 363 days1999: Moderate 146 of 363 days1999: Unhealthy for Sensitive Groups 14 of 363 days1999: Unhealthy 2 of 363 days2000: Good 113 of 366 days2000: Moderate 232 of 366 days2000: Unhealthy for Sensitive Groups 20 of 366 days2000: Unhealthy 1 of 366 days20002001: Good 140 of 365 days2001: Moderate 215 of 365 days2001: Unhealthy for Sensitive Groups 10 of 365 days2002: Good 166 of 365 days2002: Moderate 195 of 365 days2002: Unhealthy for Sensitive Groups 4 of 365 days2003: Good 175 of 365 days2003: Moderate 177 of 365 days2003: Unhealthy for Sensitive Groups 13 of 365 days2004: Good 56 of 364 days2004: Moderate 293 of 364 days2004: Unhealthy for Sensitive Groups 12 of 364 days2004: Unhealthy 3 of 364 days2005: Good 66 of 365 days2005: Moderate 283 of 365 days2005: Unhealthy for Sensitive Groups 14 of 365 days2005: Unhealthy 2 of 365 days20052006: Good 108 of 365 days2006: Moderate 243 of 365 days2006: Unhealthy for Sensitive Groups 13 of 365 days2006: Unhealthy 1 of 365 days2007: Good 135 of 365 days2007: Moderate 216 of 365 days2007: Unhealthy for Sensitive Groups 8 of 365 days2007: Unhealthy 6 of 365 days2008: Good 134 of 366 days2008: Moderate 227 of 366 days2008: Unhealthy for Sensitive Groups 5 of 366 days2009: Good 162 of 365 days2009: Moderate 200 of 365 days2009: Unhealthy for Sensitive Groups 3 of 365 days2010: Good 172 of 365 days2010: Moderate 188 of 365 days2010: Unhealthy for Sensitive Groups 5 of 365 days20102011: Good 215 of 365 days2011: Moderate 139 of 365 days2011: Unhealthy for Sensitive Groups 8 of 365 days2011: Unhealthy 3 of 365 days2012: Good 261 of 366 days2012: Moderate 102 of 366 days2012: Unhealthy for Sensitive Groups 2 of 366 days2012: Unhealthy 1 of 366 days2013: Good 270 of 365 days2013: Moderate 94 of 365 days2013: Unhealthy for Sensitive Groups 1 of 365 days2014: Good 183 of 365 days2014: Moderate 178 of 365 days2014: Unhealthy for Sensitive Groups 4 of 365 days2015: Good 241 of 365 days2015: Moderate 123 of 365 days2015: Unhealthy for Sensitive Groups 1 of 365 days20152016: Good 210 of 366 days2016: Moderate 156 of 366 days2017: Good 224 of 365 days2017: Moderate 140 of 365 days2017: Unhealthy for Sensitive Groups 1 of 365 days2018: Good 177 of 365 days2018: Moderate 183 of 365 days2018: Unhealthy for Sensitive Groups 4 of 365 days2018: Unhealthy 1 of 365 days2019: Good 164 of 361 days2019: Moderate 196 of 361 days2019: Unhealthy for Sensitive Groups 1 of 361 days2020: Good 162 of 366 days2020: Moderate 201 of 366 days2020: Unhealthy for Sensitive Groups 3 of 366 days20202021: Good 140 of 365 days2021: Moderate 225 of 365 days2022: Good 144 of 365 days2022: Moderate 221 of 365 days2023: Good 156 of 365 days2023: Moderate 207 of 365 days2023: Unhealthy for Sensitive Groups 2 of 365 days2024: Good 190 of 366 days2024: Moderate 176 of 366 days2025: Good 175 of 365 days2025: Moderate 186 of 365 days2025: Unhealthy for Sensitive Groups 4 of 365 days2025
  • 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 and 90th-percentile daily AQI, by year0501001980: 90th percentile AQI 921981: 90th percentile AQI 891982: 90th percentile AQI 701983: 90th percentile AQI 741984: 90th percentile AQI 741985: 90th percentile AQI 711986: 90th percentile AQI 841987: 90th percentile AQI 1001988: 90th percentile AQI 971989: 90th percentile AQI 801990: 90th percentile AQI 901991: 90th percentile AQI 621992: 90th percentile AQI 711993: 90th percentile AQI 871994: 90th percentile AQI 611995: 90th percentile AQI 711996: 90th percentile AQI 741997: 90th percentile AQI 801998: 90th percentile AQI 901999: 90th percentile AQI 872000: 90th percentile AQI 882001: 90th percentile AQI 742002: 90th percentile AQI 712003: 90th percentile AQI 712004: 90th percentile AQI 822005: 90th percentile AQI 852006: 90th percentile AQI 802007: 90th percentile AQI 792008: 90th percentile AQI 682009: 90th percentile AQI 642010: 90th percentile AQI 692011: 90th percentile AQI 712012: 90th percentile AQI 592013: 90th percentile AQI 582014: 90th percentile AQI 652015: 90th percentile AQI 592016: 90th percentile AQI 632017: 90th percentile AQI 632018: 90th percentile AQI 652019: 90th percentile AQI 672020: 90th percentile AQI 632021: 90th percentile AQI 622022: 90th percentile AQI 642023: 90th percentile AQI 672024: 90th percentile AQI 642025: 90th percentile AQI 621980: Median AQI 491981: Median AQI 481982: Median AQI 411983: Median AQI 431984: Median AQI 441985: Median AQI 421986: Median AQI 421987: Median AQI 461988: Median AQI 451989: Median AQI 431990: Median AQI 441991: Median AQI 381992: Median AQI 381993: Median AQI 411994: Median AQI 361995: Median AQI 391996: Median AQI 401997: Median AQI 391998: Median AQI 411999: Median AQI 492000: Median AQI 552001: Median AQI 532002: Median AQI 522003: Median AQI 512004: Median AQI 592005: Median AQI 582006: Median AQI 552007: Median AQI 542008: Median AQI 532009: Median AQI 522010: Median AQI 522011: Median AQI 452012: Median AQI 422013: Median AQI 412014: Median AQI 502015: Median AQI 442016: Median AQI 482017: Median AQI 462018: Median AQI 512019: Median AQI 512020: Median AQI 522021: Median AQI 522022: Median AQI 532023: Median AQI 522024: Median AQI 502025: Median AQI 511980198519901995200020052010201520202025
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2025

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.

PollutantDays as main pollutantShare of monitored days
Fine particles (PM2.5)29079%
Ozone7220%
Nitrogen dioxide (NO₂)31%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202536517518640005162136PM2.5
20243661901760000506498PM2.5
202336515620720005267124PM2.5
20223651442210000536493PM2.5
20213651402250000526294PM2.5
202036616220130005263125PM2.5
201936116419610005167114PM2.5
201836517718341005165156PM2.5
201736522414010004663101PM2.5
20163662101560000486397PM2.5
201536524112310004459104PM2.5
201436518317840005065126PM2.5
20133652709410004158111PM2.5
201236626110221004259170PM2.5
201136521513983004571184Ozone
201036517218850005269147PM2.5
200936516220030005264136PM2.5
200836613422750005368115PM2.5
200736513521686005479174PM2.5
2006365108243131005580159PM2.5
200536566283142005885157PM2.5
200436456293123005982174PM2.5
2003365175177130005171136PM2.5
200236516619540005271119PM2.5
2001365140215100005374149PM2.5
2000366113232201005588172PM2.5
1999363201146142004987154Ozone
199836426769188204190214Ozone
199736527869144003980174Ozone
199636628272111004074151Ozone
199536529459111003971154Ozone
199436530648101003661169Ozone
199336527469202004187166Ozone
199236629752152003871161Ozone
199136531639100003862126Ozone
1990365241102211004490174Ozone
198936526483144004380159Ozone
1988366232101303004597166Ozone
19873652281052741046100219Ozone
198636526480210004284147Ozone
198536528071130104271215Ozone
198436624910872004474166Ozone
19833652639093004374166Ozone
198236527675122004170174Ozone
1981365215131172004889177Ozone
1980366195144197104992205CO

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.

Counties in Florida with a similar median AQI in 2025

All monitored counties in Florida

Source: U.S. EPA AirData, “Annual AQI by County” files for 1980–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem