EnviroNearby

Lee County, Florida air quality history

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

76%
Good days in 2025
40
Median daily AQI, 2025
0
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 Lee, Florida on 365 days. 279 of those days (76%) were in the Good range, and the median daily AQI was 40. That median is about the same as the typical monitored county in Florida (median 41 across 38 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was ozone on 207 days. Across the years with fuller monitoring, the share of Good days fell: an average of 95% in 1980–1982 versus 88% in 2023–2025.

Years with fewer than 120 monitored days (1983, 1988) 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.

Share of monitored days in each AQI category, by year0%25%50%75%100%1980: Good 132 of 136 days1980: Moderate 4 of 136 days19801981: Good 285 of 302 days1981: Moderate 17 of 302 days1982: Good 164 of 174 days1982: Moderate 10 of 174 days1983: Good 83 of 85 days1983: Moderate 2 of 85 days1988: Good 41 of 41 days1989: Good 310 of 350 days1989: Moderate 30 of 350 days1989: Unhealthy for Sensitive Groups 9 of 350 days1989: Unhealthy 1 of 350 days19891990: Good 306 of 355 days1990: Moderate 46 of 355 days1990: Unhealthy for Sensitive Groups 3 of 355 days1991: Good 338 of 365 days1991: Moderate 26 of 365 days1991: Unhealthy for Sensitive Groups 1 of 365 days1992: Good 327 of 364 days1992: Moderate 28 of 364 days1992: Unhealthy for Sensitive Groups 9 of 364 days1993: Good 328 of 365 days1993: Moderate 34 of 365 days1993: Unhealthy for Sensitive Groups 3 of 365 days1994: Good 325 of 364 days1994: Moderate 31 of 364 days1994: Unhealthy for Sensitive Groups 8 of 364 days19941995: Good 327 of 365 days1995: Moderate 35 of 365 days1995: Unhealthy for Sensitive Groups 3 of 365 days1996: Good 328 of 366 days1996: Moderate 35 of 366 days1996: Unhealthy for Sensitive Groups 3 of 366 days1997: Good 309 of 365 days1997: Moderate 51 of 365 days1997: Unhealthy for Sensitive Groups 5 of 365 days1998: Good 287 of 360 days1998: Moderate 58 of 360 days1998: Unhealthy for Sensitive Groups 11 of 360 days1998: Unhealthy 4 of 360 days1999: Good 261 of 365 days1999: Moderate 93 of 365 days1999: Unhealthy for Sensitive Groups 8 of 365 days1999: Unhealthy 3 of 365 days19992000: Good 266 of 366 days2000: Moderate 88 of 366 days2000: Unhealthy for Sensitive Groups 11 of 366 days2000: Unhealthy 1 of 366 days2001: Good 274 of 365 days2001: Moderate 88 of 365 days2001: Unhealthy for Sensitive Groups 3 of 365 days2002: Good 303 of 365 days2002: Moderate 62 of 365 days2003: Good 298 of 365 days2003: Moderate 59 of 365 days2003: Unhealthy for Sensitive Groups 7 of 365 days2003: Unhealthy 1 of 365 days2004: Good 272 of 361 days2004: Moderate 82 of 361 days2004: Unhealthy for Sensitive Groups 7 of 361 days20042005: Good 286 of 364 days2005: Moderate 74 of 364 days2005: Unhealthy for Sensitive Groups 4 of 364 days2006: Good 276 of 365 days2006: Moderate 82 of 365 days2006: Unhealthy for Sensitive Groups 7 of 365 days2007: Good 288 of 365 days2007: Moderate 75 of 365 days2007: Unhealthy for Sensitive Groups 2 of 365 days2008: Good 320 of 366 days2008: Moderate 43 of 366 days2008: Unhealthy for Sensitive Groups 3 of 366 days2009: Good 238 of 365 days2009: Moderate 127 of 365 days20092010: Good 220 of 365 days2010: Moderate 144 of 365 days2010: Unhealthy for Sensitive Groups 1 of 365 days2011: Good 255 of 365 days2011: Moderate 110 of 365 days2012: Good 262 of 366 days2012: Moderate 104 of 366 days2013: Good 275 of 365 days2013: Moderate 90 of 365 days2014: Good 265 of 365 days2014: Moderate 100 of 365 days20142015: Good 276 of 365 days2015: Moderate 89 of 365 days2016: Good 282 of 366 days2016: Moderate 83 of 366 days2016: Unhealthy for Sensitive Groups 1 of 366 days2017: Good 278 of 363 days2017: Moderate 85 of 363 days2018: Good 294 of 365 days2018: Moderate 70 of 365 days2018: Unhealthy for Sensitive Groups 1 of 365 days2019: Good 289 of 365 days2019: Moderate 75 of 365 days2019: Unhealthy for Sensitive Groups 1 of 365 days20192020: Good 284 of 366 days2020: Moderate 82 of 366 days2021: Good 299 of 365 days2021: Moderate 66 of 365 days2022: Good 238 of 302 days2022: Moderate 64 of 302 days2023: Good 343 of 363 days2023: Moderate 19 of 363 days2023: Unhealthy for Sensitive Groups 1 of 363 days2024: Good 313 of 340 days2024: Moderate 27 of 340 days20242025: Good 279 of 365 days2025: Moderate 86 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 441981: 90th percentile AQI 441982: 90th percentile AQI 441983: 90th percentile AQI 441988: 90th percentile AQI 411989: 90th percentile AQI 541990: 90th percentile AQI 581991: 90th percentile AQI 481992: 90th percentile AQI 511993: 90th percentile AQI 511994: 90th percentile AQI 511995: 90th percentile AQI 511996: 90th percentile AQI 511997: 90th percentile AQI 671998: 90th percentile AQI 771999: 90th percentile AQI 672000: 90th percentile AQI 742001: 90th percentile AQI 612002: 90th percentile AQI 542003: 90th percentile AQI 582004: 90th percentile AQI 642005: 90th percentile AQI 612006: 90th percentile AQI 642007: 90th percentile AQI 642008: 90th percentile AQI 522009: 90th percentile AQI 592010: 90th percentile AQI 632011: 90th percentile AQI 582012: 90th percentile AQI 582013: 90th percentile AQI 582014: 90th percentile AQI 582015: 90th percentile AQI 562016: 90th percentile AQI 562017: 90th percentile AQI 552018: 90th percentile AQI 572019: 90th percentile AQI 552020: 90th percentile AQI 552021: 90th percentile AQI 542022: 90th percentile AQI 552023: 90th percentile AQI 462024: 90th percentile AQI 492025: 90th percentile AQI 561980: Median AQI 281981: Median AQI 271982: Median AQI 281983: Median AQI 291988: Median AQI 331989: Median AQI 331990: Median AQI 371991: Median AQI 341992: Median AQI 331993: Median AQI 341994: Median AQI 331995: Median AQI 361996: Median AQI 361997: Median AQI 381998: Median AQI 371999: Median AQI 422000: Median AQI 422001: Median AQI 372002: Median AQI 382003: Median AQI 372004: Median AQI 402005: Median AQI 392006: Median AQI 402007: Median AQI 392008: Median AQI 362009: Median AQI 432010: Median AQI 462011: Median AQI 442012: Median AQI 432013: Median AQI 402014: Median AQI 422015: Median AQI 402016: Median AQI 422017: Median AQI 402018: Median AQI 382019: Median AQI 402020: Median AQI 392021: Median AQI 412022: Median AQI 422023: Median AQI 352024: Median AQI 372025: Median AQI 401980198919941999200420092014201920242025
  • 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
Ozone20757%
Fine particles (PM2.5)15843%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025365279860000405697Ozone
2024340313270000374980Ozone
20233633431910003546101Ozone
2022302238640000425580PM2.5
2021365299660000415497PM2.5
20203662848200003955100PM2.5
20193652897510004055108PM2.5
20183652947010003857106Ozone
2017363278850000405590Ozone
20163662828310004256105PM2.5
2015365276890000405690PM2.5
20143652651000000425893PM2.5
2013365275900000405893PM2.5
20123662621040000435898PM2.5
20113652551100000445890PM2.5
201036522014410004663101PM2.5
20093652381270000435987PM2.5
20083663204330003652119Ozone
20073652887520003964122Ozone
20063652768270004064126Ozone
20053642867440003961140Ozone
20043612728270004064136Ozone
20033652985971003758156Ozone
2002365303620000385497Ozone
20013652748830003761115Ozone
200036626688111004274172Ozone
19993652619383004267156Ozone
199836028758114003777174Ozone
19973653095150003867136Ozone
19963663283530003651136Ozone
19953653273530003651115Ozone
19943643253180003351150Ozone
19933653283430003451108Ozone
19923643272890003351126Ozone
19913653382610003448119Ozone
19903553064630003758105Ozone
19893503103091003354154Ozone
1988414100000334147Ozone
1983858320000294471Ozone
1982174164100000284490Ozone
1981302285170000274490Ozone
198013613240000284467Ozone

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