EnviroNearby

Elmore County, Alabama air quality history

Daily Air Quality Index summaries from EPA monitors in Elmore, Alabama, 1990–2025.

98%
Good days in 2025
34
Median daily AQI, 2025
0
Days above 100 in 2025
235
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Elmore, Alabama on 235 days. 230 of those days (98%) were in the Good range, and the median daily AQI was 34. That median is lower than the typical monitored county in Alabama (median 41 across 14 counties), and lower than the typical monitored U.S. county (40). The main pollutant was ozone on 235 days. Across the years with fuller monitoring, the share of Good days rose: an average of 75% in 1990–1992 versus 96% in 2023–2025.

EPA did not report an AQI for every day of 2025 here (235 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

Years with fewer than 120 monitored days (2016) 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%1990: Good 167 of 251 days1990: Moderate 65 of 251 days1990: Unhealthy for Sensitive Groups 19 of 251 days19901991: Good 203 of 254 days1991: Moderate 49 of 254 days1991: Unhealthy for Sensitive Groups 2 of 254 days1992: Good 211 of 272 days1992: Moderate 49 of 272 days1992: Unhealthy for Sensitive Groups 11 of 272 days1992: Unhealthy 1 of 272 days1993: Good 190 of 282 days1993: Moderate 75 of 282 days1993: Unhealthy for Sensitive Groups 14 of 282 days1993: Unhealthy 3 of 282 days1994: Good 262 of 317 days1994: Moderate 44 of 317 days1994: Unhealthy for Sensitive Groups 10 of 317 days1994: Unhealthy 1 of 317 days1995: Good 247 of 295 days1995: Moderate 38 of 295 days1995: Unhealthy for Sensitive Groups 5 of 295 days1995: Unhealthy 5 of 295 days19951996: Good 164 of 236 days1996: Moderate 62 of 236 days1996: Unhealthy for Sensitive Groups 9 of 236 days1996: Unhealthy 1 of 236 days1997: Good 122 of 183 days1997: Moderate 58 of 183 days1997: Unhealthy for Sensitive Groups 3 of 183 days1998: Good 129 of 211 days1998: Moderate 62 of 211 days1998: Unhealthy for Sensitive Groups 14 of 211 days1998: Unhealthy 5 of 211 days1998: Very Unhealthy 1 of 211 days1999: Good 157 of 241 days1999: Moderate 71 of 241 days1999: Unhealthy for Sensitive Groups 12 of 241 days1999: Unhealthy 1 of 241 days2000: Good 125 of 242 days2000: Moderate 78 of 242 days2000: Unhealthy for Sensitive Groups 37 of 242 days2000: Unhealthy 2 of 242 days20002001: Good 165 of 241 days2001: Moderate 63 of 241 days2001: Unhealthy for Sensitive Groups 12 of 241 days2001: Unhealthy 1 of 241 days2002: Good 176 of 241 days2002: Moderate 54 of 241 days2002: Unhealthy for Sensitive Groups 9 of 241 days2002: Unhealthy 2 of 241 days2003: Good 181 of 240 days2003: Moderate 54 of 240 days2003: Unhealthy for Sensitive Groups 5 of 240 days2004: Good 177 of 238 days2004: Moderate 55 of 238 days2004: Unhealthy for Sensitive Groups 6 of 238 days2005: Good 194 of 240 days2005: Moderate 45 of 240 days2005: Unhealthy for Sensitive Groups 1 of 240 days20052006: Good 166 of 244 days2006: Moderate 72 of 244 days2006: Unhealthy for Sensitive Groups 6 of 244 days2007: Good 162 of 244 days2007: Moderate 75 of 244 days2007: Unhealthy for Sensitive Groups 6 of 244 days2007: Unhealthy 1 of 244 days2008: Good 180 of 245 days2008: Moderate 64 of 245 days2008: Unhealthy for Sensitive Groups 1 of 245 days2009: Good 228 of 244 days2009: Moderate 16 of 244 days2010: Good 181 of 241 days2010: Moderate 55 of 241 days2010: Unhealthy for Sensitive Groups 5 of 241 days20102011: Good 192 of 242 days2011: Moderate 48 of 242 days2011: Unhealthy for Sensitive Groups 2 of 242 days2012: Good 212 of 245 days2012: Moderate 33 of 245 days2013: Good 229 of 244 days2013: Moderate 15 of 244 days2014: Good 224 of 245 days2014: Moderate 21 of 245 days2015: Good 223 of 233 days2015: Moderate 9 of 233 days2015: Unhealthy for Sensitive Groups 1 of 233 days20152016: Good 107 of 117 days2016: Moderate 10 of 117 days2017: Good 221 of 226 days2017: Moderate 5 of 226 days2018: Good 203 of 222 days2018: Moderate 19 of 222 days2019: Good 208 of 228 days2019: Moderate 20 of 228 days2020: Good 197 of 197 days20202021: Good 238 of 241 days2021: Moderate 3 of 241 days2022: Good 232 of 240 days2022: Moderate 8 of 240 days2023: Good 221 of 238 days2023: Moderate 17 of 238 days2024: Good 231 of 234 days2024: Moderate 3 of 234 days2025: Good 230 of 235 days2025: Moderate 5 of 235 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 year0501001501990: 90th percentile AQI 971991: 90th percentile AQI 611992: 90th percentile AQI 771993: 90th percentile AQI 931994: 90th percentile AQI 741995: 90th percentile AQI 711996: 90th percentile AQI 841997: 90th percentile AQI 871998: 90th percentile AQI 1001999: 90th percentile AQI 872000: 90th percentile AQI 1122001: 90th percentile AQI 802002: 90th percentile AQI 902003: 90th percentile AQI 742004: 90th percentile AQI 802005: 90th percentile AQI 712006: 90th percentile AQI 772007: 90th percentile AQI 772008: 90th percentile AQI 742009: 90th percentile AQI 492010: 90th percentile AQI 712011: 90th percentile AQI 642012: 90th percentile AQI 542013: 90th percentile AQI 482014: 90th percentile AQI 492015: 90th percentile AQI 472016: 90th percentile AQI 482017: 90th percentile AQI 452018: 90th percentile AQI 492019: 90th percentile AQI 502020: 90th percentile AQI 412021: 90th percentile AQI 442022: 90th percentile AQI 442023: 90th percentile AQI 492024: 90th percentile AQI 462025: 90th percentile AQI 461990: Median AQI 451991: Median AQI 401992: Median AQI 411993: Median AQI 441994: Median AQI 351995: Median AQI 331996: Median AQI 441997: Median AQI 451998: Median AQI 471999: Median AQI 452000: Median AQI 502001: Median AQI 432002: Median AQI 422003: Median AQI 422004: Median AQI 422005: Median AQI 422006: Median AQI 462007: Median AQI 452008: Median AQI 422009: Median AQI 362010: Median AQI 432011: Median AQI 442012: Median AQI 402013: Median AQI 362014: Median AQI 362015: Median AQI 352016: Median AQI 402017: Median AQI 352018: Median AQI 332019: Median AQI 392020: Median AQI 312021: Median AQI 322022: Median AQI 332023: Median AQI 382024: Median AQI 372025: Median AQI 3419901995200020052010201520202025
  • 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
Ozone235100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202523523050000344664Ozone
202423423130000374658Ozone
2023238221170000384990Ozone
202224023280000334474Ozone
202124123830000324487Ozone
202019719700000314147Ozone
20192282082000003950100Ozone
2018222203190000334971Ozone
201722622150000354558Ozone
2016117107100000404877Ozone
2015233223910003547115Ozone
2014245224210000364984Ozone
2013244229150000364887Ozone
20122452123300004054100Ozone
20112421924820004464105Ozone
20102411815550004371112Ozone
2009244228160000364980Ozone
20082451806410004274105Ozone
20072441627561004577151Ozone
20062441667260004677112Ozone
20052401944510004271101Ozone
20042381775560004280129Ozone
20032401815450004274143Ozone
20022411765492004290164Ozone
200124116563121004380154Ozone
2000242125783720050112166Ozone
199924115771121004587151Ozone
1998211129621451047100203Ozone
19971831225830004587115Ozone
19962361646291004484174Ozone
19952952473855003371169Ozone
199431726244101003574159Ozone
199328219075143004493156Ozone
199227221149111004177159Ozone
19912542034920004061140Ozone
199025116765190004597150Ozone

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 1990–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem