EnviroNearby

Pinellas County, Florida air quality history

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

70%
Good days in 2025
44
Median daily AQI, 2025
1
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 Pinellas, Florida on 365 days. 254 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 189 days. Across the years with fuller monitoring, the share of Good days rose: an average of 53% in 1980–1982 versus 63% 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 196 of 366 days1980: Moderate 140 of 366 days1980: Unhealthy for Sensitive Groups 21 of 366 days1980: Unhealthy 9 of 366 days19801981: Good 169 of 365 days1981: Moderate 168 of 365 days1981: Unhealthy for Sensitive Groups 22 of 365 days1981: Unhealthy 6 of 365 days1982: Good 213 of 365 days1982: Moderate 124 of 365 days1982: Unhealthy for Sensitive Groups 23 of 365 days1982: Unhealthy 5 of 365 days1983: Good 190 of 365 days1983: Moderate 140 of 365 days1983: Unhealthy for Sensitive Groups 24 of 365 days1983: Unhealthy 10 of 365 days1983: Very Unhealthy 1 of 365 days1984: Good 170 of 366 days1984: Moderate 172 of 366 days1984: Unhealthy for Sensitive Groups 16 of 366 days1984: Unhealthy 8 of 366 days1985: Good 202 of 365 days1985: Moderate 134 of 365 days1985: Unhealthy for Sensitive Groups 23 of 365 days1985: Unhealthy 5 of 365 days1985: Very Unhealthy 1 of 365 days19851986: Good 214 of 365 days1986: Moderate 115 of 365 days1986: Unhealthy for Sensitive Groups 25 of 365 days1986: Unhealthy 10 of 365 days1986: Very Unhealthy 1 of 365 days1987: Good 215 of 365 days1987: Moderate 111 of 365 days1987: Unhealthy for Sensitive Groups 35 of 365 days1987: Unhealthy 3 of 365 days1987: Very Unhealthy 1 of 365 days1988: Good 249 of 366 days1988: Moderate 85 of 366 days1988: Unhealthy for Sensitive Groups 26 of 366 days1988: Unhealthy 6 of 366 days1989: Good 265 of 365 days1989: Moderate 74 of 365 days1989: Unhealthy for Sensitive Groups 23 of 365 days1989: Unhealthy 3 of 365 days1990: Good 268 of 365 days1990: Moderate 72 of 365 days1990: Unhealthy for Sensitive Groups 21 of 365 days1990: Unhealthy 4 of 365 days19901991: Good 306 of 365 days1991: Moderate 51 of 365 days1991: Unhealthy for Sensitive Groups 8 of 365 days1992: Good 296 of 366 days1992: Moderate 59 of 366 days1992: Unhealthy for Sensitive Groups 11 of 366 days1993: Good 285 of 365 days1993: Moderate 70 of 365 days1993: Unhealthy for Sensitive Groups 10 of 365 days1994: Good 308 of 365 days1994: Moderate 47 of 365 days1994: Unhealthy for Sensitive Groups 9 of 365 days1994: Unhealthy 1 of 365 days1995: Good 303 of 365 days1995: Moderate 55 of 365 days1995: Unhealthy for Sensitive Groups 7 of 365 days19951996: Good 314 of 366 days1996: Moderate 47 of 366 days1996: Unhealthy for Sensitive Groups 5 of 366 days1997: Good 275 of 365 days1997: Moderate 76 of 365 days1997: Unhealthy for Sensitive Groups 14 of 365 days1998: Good 277 of 365 days1998: Moderate 70 of 365 days1998: Unhealthy for Sensitive Groups 11 of 365 days1998: Unhealthy 6 of 365 days1998: Very Unhealthy 1 of 365 days1999: Good 124 of 365 days1999: Moderate 216 of 365 days1999: Unhealthy for Sensitive Groups 20 of 365 days1999: Unhealthy 5 of 365 days2000: Good 122 of 366 days2000: Moderate 217 of 366 days2000: Unhealthy for Sensitive Groups 22 of 366 days2000: Unhealthy 5 of 366 days20002001: Good 109 of 365 days2001: Moderate 241 of 365 days2001: Unhealthy for Sensitive Groups 13 of 365 days2001: Unhealthy 2 of 365 days2002: Good 118 of 365 days2002: Moderate 244 of 365 days2002: Unhealthy for Sensitive Groups 3 of 365 days2003: Good 119 of 365 days2003: Moderate 232 of 365 days2003: Unhealthy for Sensitive Groups 13 of 365 days2003: Unhealthy 1 of 365 days2004: Good 105 of 366 days2004: Moderate 254 of 366 days2004: Unhealthy for Sensitive Groups 7 of 366 days2005: Good 88 of 365 days2005: Moderate 262 of 365 days2005: Unhealthy for Sensitive Groups 13 of 365 days2005: Unhealthy 2 of 365 days20052006: Good 125 of 365 days2006: Moderate 231 of 365 days2006: Unhealthy for Sensitive Groups 8 of 365 days2006: Unhealthy 1 of 365 days2007: Good 138 of 365 days2007: Moderate 219 of 365 days2007: Unhealthy for Sensitive Groups 5 of 365 days2007: Unhealthy 3 of 365 days2008: Good 132 of 366 days2008: Moderate 228 of 366 days2008: Unhealthy for Sensitive Groups 6 of 366 days2009: Good 177 of 365 days2009: Moderate 188 of 365 days2010: Good 152 of 365 days2010: Moderate 213 of 365 days20102011: Good 177 of 365 days2011: Moderate 183 of 365 days2011: Unhealthy for Sensitive Groups 5 of 365 days2012: Good 196 of 366 days2012: Moderate 169 of 366 days2012: Unhealthy for Sensitive Groups 1 of 366 days2013: Good 220 of 365 days2013: Moderate 142 of 365 days2013: Unhealthy for Sensitive Groups 3 of 365 days2014: Good 212 of 365 days2014: Moderate 152 of 365 days2014: Unhealthy for Sensitive Groups 1 of 365 days2015: Good 254 of 365 days2015: Moderate 111 of 365 days20152016: Good 247 of 366 days2016: Moderate 119 of 366 days2017: Good 200 of 365 days2017: Moderate 164 of 365 days2017: Unhealthy for Sensitive Groups 1 of 365 days2018: Good 245 of 365 days2018: Moderate 120 of 365 days2019: Good 223 of 365 days2019: Moderate 142 of 365 days2020: Good 226 of 366 days2020: Moderate 140 of 366 days20202021: Good 222 of 365 days2021: Moderate 143 of 365 days2022: Good 226 of 365 days2022: Moderate 139 of 365 days2023: Good 217 of 365 days2023: Moderate 145 of 365 days2023: Unhealthy for Sensitive Groups 3 of 365 days2024: Good 213 of 360 days2024: Moderate 144 of 360 days2024: Unhealthy for Sensitive Groups 3 of 360 days2025: Good 254 of 365 days2025: Moderate 110 of 365 days2025: Unhealthy for Sensitive Groups 1 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 year0501001501980: 90th percentile AQI 951981: 90th percentile AQI 931982: 90th percentile AQI 931983: 90th percentile AQI 1001984: 90th percentile AQI 931985: 90th percentile AQI 841986: 90th percentile AQI 1001987: 90th percentile AQI 1011988: 90th percentile AQI 971989: 90th percentile AQI 871990: 90th percentile AQI 871991: 90th percentile AQI 641992: 90th percentile AQI 641993: 90th percentile AQI 741994: 90th percentile AQI 641995: 90th percentile AQI 671996: 90th percentile AQI 641997: 90th percentile AQI 741998: 90th percentile AQI 801999: 90th percentile AQI 872000: 90th percentile AQI 972001: 90th percentile AQI 772002: 90th percentile AQI 712003: 90th percentile AQI 722004: 90th percentile AQI 712005: 90th percentile AQI 802006: 90th percentile AQI 712007: 90th percentile AQI 742008: 90th percentile AQI 652009: 90th percentile AQI 622010: 90th percentile AQI 662011: 90th percentile AQI 672012: 90th percentile AQI 642013: 90th percentile AQI 592014: 90th percentile AQI 622015: 90th percentile AQI 582016: 90th percentile AQI 582017: 90th percentile AQI 612018: 90th percentile AQI 592019: 90th percentile AQI 612020: 90th percentile AQI 602021: 90th percentile AQI 592022: 90th percentile AQI 582023: 90th percentile AQI 622024: 90th percentile AQI 602025: 90th percentile AQI 571980: Median AQI 491981: Median AQI 521982: Median AQI 471983: Median AQI 501984: Median AQI 511985: Median AQI 491986: Median AQI 481987: Median AQI 471988: Median AQI 441989: Median AQI 421990: Median AQI 421991: Median AQI 381992: Median AQI 371993: Median AQI 401994: Median AQI 351995: Median AQI 391996: Median AQI 381997: Median AQI 401998: Median AQI 421999: Median AQI 552000: Median AQI 552001: Median AQI 552002: Median AQI 542003: Median AQI 542004: Median AQI 552005: Median AQI 562006: Median AQI 542007: Median AQI 532008: Median AQI 532009: Median AQI 512010: Median AQI 522011: Median AQI 512012: Median AQI 502013: Median AQI 462014: Median AQI 472015: Median AQI 432016: Median AQI 452017: Median AQI 482018: Median AQI 462019: Median AQI 472020: Median AQI 462021: Median AQI 472022: Median AQI 462023: Median AQI 472024: Median AQI 482025: Median AQI 441980198519901995200020052010201520202025
  • 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)18952%
Ozone17347%
Coarse particles (PM10)31%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202536525411010004457129PM2.5
202436021314430004860132PM2.5
202336521714530004762113PM2.5
20223652261390000465887PM2.5
20213652221430000475995PM2.5
202036622614000004660100PM2.5
201936522314200004761100PM2.5
201836524512000004659100PM2.5
201736520016410004861140PM2.5
20163662471190000455897PM2.5
20153652541110000435878PM2.5
201436521215210004762112PM2.5
201336522014230004659115PM2.5
201236619616910005064108PM2.5
201136517718350005167136PM2.5
201036515221300005266100PM2.5
20093651771880000516297PM2.5
200836613222860005365140PM2.5
200736513821953005374198PM2.5
200636512523181005471154PM2.5
200536588262132005680184PM2.5
200436610525470005571136PM2.5
2003365119232131005472159PM2.5
200236511824430005471129PM2.5
2001365109241132005577172PM2.5
2000366122217225005597165PM2.5
1999365124216205005587197PM2.5
199836527770116104280207Ozone
199736527576140004074133Ozone
19963663144750003864143Ozone
19953653035570003967129Ozone
19943653084791003564161Ozone
199336528570100004074133Ozone
199236629659110003764143Ozone
19913653065180003864147Ozone
199036526872214004287187Ozone
198936526574233004287179Ozone
198836624985266004497164Ozone
19873652151113531047101205Ozone
198636521411525101048100230Ozone
1985365202134235104984204Ozone
1984366170172168005193190Ozone
198336519014024101050100213Ozone
1982365213124235004793185CO
1981365169168226005293169Ozone
1980366196140219004995200Ozone

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