EnviroNearby

Mobile County, Alabama air quality history

Daily Air Quality Index summaries from EPA monitors in Mobile, Alabama, 1980–2025.

72%
Good days in 2025
43
Median daily AQI, 2025
0
Days above 100 in 2025
363
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Mobile, Alabama on 363 days. 260 of those days (72%) were in the Good range, and the median daily AQI was 43. That median is about the same as the typical monitored county in Alabama (median 41 across 14 counties), and higher than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 255 days. Across the years with fuller monitoring, the share of Good days fell: an average of 72% in 1980–1982 versus 65% 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 108 of 129 days1980: Moderate 10 of 129 days1980: Unhealthy for Sensitive Groups 6 of 129 days1980: Unhealthy 4 of 129 days1980: Very Unhealthy 1 of 129 days19801981: Good 199 of 362 days1981: Moderate 97 of 362 days1981: Unhealthy for Sensitive Groups 48 of 362 days1981: Unhealthy 16 of 362 days1981: Very Unhealthy 2 of 362 days1982: Good 272 of 356 days1982: Moderate 64 of 356 days1982: Unhealthy for Sensitive Groups 16 of 356 days1982: Unhealthy 4 of 356 days1983: Good 227 of 337 days1983: Moderate 72 of 337 days1983: Unhealthy for Sensitive Groups 29 of 337 days1983: Unhealthy 8 of 337 days1983: Very Unhealthy 1 of 337 days1984: Good 189 of 274 days1984: Moderate 56 of 274 days1984: Unhealthy for Sensitive Groups 22 of 274 days1984: Unhealthy 7 of 274 days1985: Good 214 of 284 days1985: Moderate 58 of 284 days1985: Unhealthy for Sensitive Groups 11 of 284 days1985: Unhealthy 1 of 284 days19851986: Good 153 of 236 days1986: Moderate 68 of 236 days1986: Unhealthy for Sensitive Groups 11 of 236 days1986: Unhealthy 4 of 236 days1987: Good 199 of 287 days1987: Moderate 70 of 287 days1987: Unhealthy for Sensitive Groups 16 of 287 days1987: Unhealthy 2 of 287 days1988: Good 186 of 270 days1988: Moderate 68 of 270 days1988: Unhealthy for Sensitive Groups 14 of 270 days1988: Unhealthy 2 of 270 days1989: Good 240 of 290 days1989: Moderate 42 of 290 days1989: Unhealthy for Sensitive Groups 8 of 290 days1990: Good 206 of 291 days1990: Moderate 60 of 291 days1990: Unhealthy for Sensitive Groups 19 of 291 days1990: Unhealthy 6 of 291 days19901991: Good 267 of 289 days1991: Moderate 21 of 289 days1991: Unhealthy 1 of 289 days1992: Good 221 of 290 days1992: Moderate 58 of 290 days1992: Unhealthy for Sensitive Groups 11 of 290 days1993: Good 262 of 316 days1993: Moderate 48 of 316 days1993: Unhealthy for Sensitive Groups 6 of 316 days1994: Good 320 of 365 days1994: Moderate 38 of 365 days1994: Unhealthy for Sensitive Groups 7 of 365 days1995: Good 266 of 337 days1995: Moderate 57 of 337 days1995: Unhealthy for Sensitive Groups 14 of 337 days19951996: Good 230 of 300 days1996: Moderate 55 of 300 days1996: Unhealthy for Sensitive Groups 12 of 300 days1996: Unhealthy 3 of 300 days1997: Good 249 of 324 days1997: Moderate 58 of 324 days1997: Unhealthy for Sensitive Groups 15 of 324 days1997: Unhealthy 2 of 324 days1998: Good 224 of 309 days1998: Moderate 55 of 309 days1998: Unhealthy for Sensitive Groups 24 of 309 days1998: Unhealthy 5 of 309 days1998: Very Unhealthy 1 of 309 days1999: Good 84 of 268 days1999: Moderate 139 of 268 days1999: Unhealthy for Sensitive Groups 39 of 268 days1999: Unhealthy 6 of 268 days2000: Good 96 of 285 days2000: Moderate 134 of 285 days2000: Unhealthy for Sensitive Groups 46 of 285 days2000: Unhealthy 9 of 285 days20002001: Good 158 of 287 days2001: Moderate 113 of 287 days2001: Unhealthy for Sensitive Groups 15 of 287 days2001: Unhealthy 1 of 287 days2002: Good 188 of 326 days2002: Moderate 122 of 326 days2002: Unhealthy for Sensitive Groups 16 of 326 days2003: Good 214 of 362 days2003: Moderate 130 of 362 days2003: Unhealthy for Sensitive Groups 16 of 362 days2003: Unhealthy 2 of 362 days2004: Good 226 of 359 days2004: Moderate 111 of 359 days2004: Unhealthy for Sensitive Groups 18 of 359 days2004: Unhealthy 3 of 359 days2004: Very Unhealthy 1 of 359 days2005: Good 196 of 342 days2005: Moderate 139 of 342 days2005: Unhealthy for Sensitive Groups 6 of 342 days2005: Unhealthy 1 of 342 days20052006: Good 209 of 359 days2006: Moderate 126 of 359 days2006: Unhealthy for Sensitive Groups 21 of 359 days2006: Unhealthy 3 of 359 days2007: Good 234 of 359 days2007: Moderate 106 of 359 days2007: Unhealthy for Sensitive Groups 17 of 359 days2007: Unhealthy 2 of 359 days2008: Good 253 of 357 days2008: Moderate 99 of 357 days2008: Unhealthy for Sensitive Groups 5 of 357 days2009: Good 282 of 358 days2009: Moderate 72 of 358 days2009: Unhealthy for Sensitive Groups 4 of 358 days2010: Good 245 of 363 days2010: Moderate 110 of 363 days2010: Unhealthy for Sensitive Groups 8 of 363 days20102011: Good 188 of 304 days2011: Moderate 109 of 304 days2011: Unhealthy for Sensitive Groups 7 of 304 days2012: Good 211 of 284 days2012: Moderate 70 of 284 days2012: Unhealthy for Sensitive Groups 3 of 284 days2013: Good 220 of 285 days2013: Moderate 65 of 285 days2014: Good 206 of 285 days2014: Moderate 73 of 285 days2014: Unhealthy for Sensitive Groups 6 of 285 days2015: Good 192 of 363 days2015: Moderate 170 of 363 days2015: Unhealthy for Sensitive Groups 1 of 363 days20152016: Good 179 of 358 days2016: Moderate 177 of 358 days2016: Unhealthy for Sensitive Groups 2 of 358 days2017: Good 250 of 361 days2017: Moderate 106 of 361 days2017: Unhealthy for Sensitive Groups 5 of 361 days2018: Good 218 of 359 days2018: Moderate 140 of 359 days2018: Unhealthy for Sensitive Groups 1 of 359 days2019: Good 167 of 352 days2019: Moderate 185 of 352 days2020: Good 188 of 348 days2020: Moderate 160 of 348 days20202021: Good 125 of 361 days2021: Moderate 236 of 361 days2022: Good 235 of 363 days2022: Moderate 128 of 363 days2023: Good 203 of 361 days2023: Moderate 157 of 361 days2023: Unhealthy for Sensitive Groups 1 of 361 days2024: Good 242 of 365 days2024: Moderate 123 of 365 days2025: Good 260 of 363 days2025: Moderate 103 of 363 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 871981: 90th percentile AQI 1291982: 90th percentile AQI 771983: 90th percentile AQI 1011984: 90th percentile AQI 1051985: 90th percentile AQI 711986: 90th percentile AQI 871987: 90th percentile AQI 841988: 90th percentile AQI 871989: 90th percentile AQI 711990: 90th percentile AQI 971991: 90th percentile AQI 491992: 90th percentile AQI 711993: 90th percentile AQI 641994: 90th percentile AQI 541995: 90th percentile AQI 801996: 90th percentile AQI 801997: 90th percentile AQI 841998: 90th percentile AQI 1001999: 90th percentile AQI 1222000: 90th percentile AQI 1222001: 90th percentile AQI 842002: 90th percentile AQI 802003: 90th percentile AQI 802004: 90th percentile AQI 872005: 90th percentile AQI 842006: 90th percentile AQI 842007: 90th percentile AQI 772008: 90th percentile AQI 672009: 90th percentile AQI 612010: 90th percentile AQI 742011: 90th percentile AQI 802012: 90th percentile AQI 642013: 90th percentile AQI 582014: 90th percentile AQI 672015: 90th percentile AQI 612016: 90th percentile AQI 632017: 90th percentile AQI 602018: 90th percentile AQI 612019: 90th percentile AQI 642020: 90th percentile AQI 622021: 90th percentile AQI 622022: 90th percentile AQI 582023: 90th percentile AQI 632024: 90th percentile AQI 582025: 90th percentile AQI 551980: Median AQI 351981: Median AQI 481982: Median AQI 381983: Median AQI 421984: Median AQI 441985: Median AQI 401986: Median AQI 441987: Median AQI 431988: Median AQI 431989: Median AQI 341990: Median AQI 411991: Median AQI 331992: Median AQI 381993: Median AQI 361994: Median AQI 311995: Median AQI 381996: Median AQI 391997: Median AQI 351998: Median AQI 391999: Median AQI 622000: Median AQI 622001: Median AQI 482002: Median AQI 452003: Median AQI 442004: Median AQI 442005: Median AQI 462006: Median AQI 462007: Median AQI 442008: Median AQI 382009: Median AQI 372010: Median AQI 422011: Median AQI 452012: Median AQI 402013: Median AQI 402014: Median AQI 432015: Median AQI 482016: Median AQI 512017: Median AQI 432018: Median AQI 442019: Median AQI 522020: Median AQI 492021: Median AQI 532022: Median AQI 442023: Median AQI 462024: Median AQI 452025: Median AQI 431980198519901995200020052010201520202025
  • 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)25570%
Ozone10830%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
20253632601030000435580PM2.5
20243652421230000455880PM2.5
202336120315710004663108PM2.5
20223632351280000445893PM2.5
20213611252360000536283PM2.5
20203481881600000496278PM2.5
20193521671850000526482PM2.5
201835921814010004461105PM2.5
201736125010650004360139PM2.5
201635817917720005163139PM2.5
201536319217010004861105PM2.5
20142852067360004367115Ozone
2013285220650000405890Ozone
20122842117030004064126Ozone
201130418810970004580122Ozone
201036324511080004274140Ozone
20093582827240003761133Ozone
20083572539950003867150Ozone
2007359234106172004477164Ozone
2006359209126213004684164Ozone
200534219613961004684154Ozone
2004359226111183104487263Ozone
2003362214130162004480182Ozone
2002326188122160004580150Ozone
2001287158113151004884159Ozone
2000285961344690062122187Ozone
1999268841393960062122179Ozone
1998309224552451039100201Ozone
199732424958152003584164Ozone
199630023055123003980172Ozone
199533726657140003880150Ozone
19943653203870003154126Ozone
19933162624860003664115Ozone
199229022158110003871150Ozone
19912892672101003349185Ozone
199029120660196004197182Ozone
19892902404280003471147Ozone
198827018668142004387159Ozone
198728719970162004384154Ozone
198623615368114004487185Ozone
198528421458111004071172Ozone
1984274189562270044105177Ozone
1983337227722981042101206Ozone
198235627264164003877169Ozone
19813621999748162048129203Ozone
19801291081064103587204Ozone

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 Alabama with a similar median AQI in 2025

All monitored counties in Alabama

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