EnviroNearby

Baker County, Florida air quality history

Daily Air Quality Index summaries from EPA monitors in Baker, Florida, 1996–2025.

70%
Good days in 2025
44
Median daily AQI, 2025
2
Days above 100 in 2025
364
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Baker, Florida on 364 days. 253 of those days (70%) were in the Good range, and the median daily AQI was 44. 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 297 days. Across the years with fuller monitoring, the share of Good days fell: an average of 81% in 1996–1998 versus 72% 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%1996: Good 298 of 357 days1996: Moderate 55 of 357 days1996: Unhealthy for Sensitive Groups 4 of 357 days19961997: Good 276 of 336 days1997: Moderate 56 of 336 days1997: Unhealthy for Sensitive Groups 4 of 336 days1998: Good 280 of 363 days1998: Moderate 68 of 363 days1998: Unhealthy for Sensitive Groups 15 of 363 days1999: Good 277 of 350 days1999: Moderate 61 of 350 days1999: Unhealthy for Sensitive Groups 12 of 350 days2000: Good 264 of 362 days2000: Moderate 81 of 362 days2000: Unhealthy for Sensitive Groups 17 of 362 days2001: Good 310 of 361 days2001: Moderate 45 of 361 days2001: Unhealthy for Sensitive Groups 6 of 361 days20012002: Good 333 of 364 days2002: Moderate 28 of 364 days2002: Unhealthy for Sensitive Groups 3 of 364 days2003: Good 322 of 359 days2003: Moderate 30 of 359 days2003: Unhealthy for Sensitive Groups 7 of 359 days2004: Good 301 of 342 days2004: Moderate 39 of 342 days2004: Unhealthy for Sensitive Groups 2 of 342 days2005: Good 317 of 362 days2005: Moderate 45 of 362 days2006: Good 295 of 360 days2006: Moderate 62 of 360 days2006: Unhealthy for Sensitive Groups 3 of 360 days20062007: Good 305 of 365 days2007: Moderate 58 of 365 days2007: Unhealthy for Sensitive Groups 2 of 365 days2008: Good 318 of 359 days2008: Moderate 40 of 359 days2008: Unhealthy for Sensitive Groups 1 of 359 days2009: Good 346 of 353 days2009: Moderate 7 of 353 days2010: Good 336 of 363 days2010: Moderate 27 of 363 days2011: Good 329 of 355 days2011: Moderate 26 of 355 days20112012: Good 340 of 364 days2012: Moderate 24 of 364 days2013: Good 355 of 365 days2013: Moderate 10 of 365 days2014: Good 347 of 362 days2014: Moderate 15 of 362 days2015: Good 356 of 364 days2015: Moderate 8 of 364 days2016: Good 334 of 358 days2016: Moderate 24 of 358 days20162017: Good 339 of 355 days2017: Moderate 16 of 355 days2018: Good 341 of 360 days2018: Moderate 19 of 360 days2019: Good 341 of 361 days2019: Moderate 20 of 361 days2020: Good 283 of 363 days2020: Moderate 78 of 363 days2020: Unhealthy for Sensitive Groups 2 of 363 days2021: Good 275 of 365 days2021: Moderate 90 of 365 days20212022: Good 266 of 365 days2022: Moderate 99 of 365 days2023: Good 248 of 364 days2023: Moderate 116 of 364 days2024: Good 279 of 359 days2024: Moderate 80 of 359 days2025: Good 253 of 364 days2025: Moderate 109 of 364 days2025: Unhealthy for Sensitive Groups 1 of 364 days2025: Unhealthy 1 of 364 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 year0501001996: 90th percentile AQI 611997: 90th percentile AQI 711998: 90th percentile AQI 771999: 90th percentile AQI 802000: 90th percentile AQI 872001: 90th percentile AQI 582002: 90th percentile AQI 492003: 90th percentile AQI 512004: 90th percentile AQI 542005: 90th percentile AQI 542006: 90th percentile AQI 642007: 90th percentile AQI 582008: 90th percentile AQI 542009: 90th percentile AQI 442010: 90th percentile AQI 492011: 90th percentile AQI 492012: 90th percentile AQI 462013: 90th percentile AQI 452014: 90th percentile AQI 462015: 90th percentile AQI 442016: 90th percentile AQI 472017: 90th percentile AQI 462018: 90th percentile AQI 462019: 90th percentile AQI 482020: 90th percentile AQI 552021: 90th percentile AQI 552022: 90th percentile AQI 552023: 90th percentile AQI 582024: 90th percentile AQI 552025: 90th percentile AQI 551996: Median AQI 361997: Median AQI 361998: Median AQI 381999: Median AQI 392000: Median AQI 402001: Median AQI 352002: Median AQI 352003: Median AQI 332004: Median AQI 342005: Median AQI 342006: Median AQI 382007: Median AQI 382008: Median AQI 342009: Median AQI 322010: Median AQI 362011: Median AQI 362012: Median AQI 332013: Median AQI 312014: Median AQI 332015: Median AQI 322016: Median AQI 342017: Median AQI 332018: Median AQI 312019: Median AQI 332020: Median AQI 402021: Median AQI 422022: Median AQI 432023: Median AQI 432024: Median AQI 422025: Median AQI 441996200120062011201620212025
  • 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)29782%
Ozone6718%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202536425310911004455155PM2.5
2024359279800000425587PM2.5
20233642481160000435889PM2.5
2022365266990000435587PM2.5
2021365275900000425587PM2.5
20203632837820004055140PM2.5
2019361341200000334877Ozone
2018360341190000314687Ozone
2017355339160000334690Ozone
2016358334240000344780Ozone
201536435680000324477Ozone
2014362347150000334674Ozone
2013365355100000314584Ozone
20123643402400003346100Ozone
2011355329260000364987Ozone
2010363336270000364997Ozone
200935334670000324474Ozone
20083593184010003454101Ozone
20073653055820003858122Ozone
20063602956230003864119Ozone
2005362317450000345497Ozone
20043423013920003454108Ozone
20033593223070003351133Ozone
20023643332830003549108Ozone
20013613104560003558126Ozone
200036226481170004087150Ozone
199935027761120003980126Ozone
199836328068150003877147Ozone
19973362765640003671115Ozone
19963572985540003661133Ozone

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 1996–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem