EnviroNearby

Pointe Coupee Parish, Louisiana air quality history

Daily Air Quality Index summaries from EPA monitors in Pointe Coupee, Louisiana, 1983–2025.

94%
Good days in 2025
35
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 Pointe Coupee, Louisiana on 365 days. 342 of those days (94%) were in the Good range, and the median daily AQI was 35. That median is lower than the typical monitored county in Louisiana (median 42 across 21 counties), and lower than the typical monitored U.S. county (40). The main pollutant was ozone on 365 days. Across the years with fuller monitoring, the share of Good days rose: an average of 78% in 1983–1990 versus 92% in 2023–2025.

Years with fewer than 120 monitored days (1984, 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%1983: Good 93 of 123 days1983: Moderate 25 of 123 days1983: Unhealthy for Sensitive Groups 3 of 123 days1983: Unhealthy 2 of 123 days19831984: Good 103 of 117 days1984: Moderate 6 of 117 days1984: Unhealthy for Sensitive Groups 6 of 117 days1984: Unhealthy 2 of 117 days1988: Good 43 of 44 days1988: Moderate 1 of 44 days1989: Good 294 of 358 days1989: Moderate 50 of 358 days1989: Unhealthy for Sensitive Groups 11 of 358 days1989: Unhealthy 2 of 358 days1989: Very Unhealthy 1 of 358 days1990: Good 274 of 363 days1990: Moderate 60 of 363 days1990: Unhealthy for Sensitive Groups 24 of 363 days1990: Unhealthy 4 of 363 days1990: Very Unhealthy 1 of 363 days1991: Good 299 of 352 days1991: Moderate 41 of 352 days1991: Unhealthy for Sensitive Groups 8 of 352 days1991: Unhealthy 4 of 352 days19911992: Good 310 of 352 days1992: Moderate 33 of 352 days1992: Unhealthy for Sensitive Groups 8 of 352 days1992: Very Unhealthy 1 of 352 days1993: Good 306 of 364 days1993: Moderate 47 of 364 days1993: Unhealthy for Sensitive Groups 9 of 364 days1993: Unhealthy 2 of 364 days1994: Good 294 of 365 days1994: Moderate 55 of 365 days1994: Unhealthy for Sensitive Groups 15 of 365 days1994: Unhealthy 1 of 365 days1995: Good 282 of 362 days1995: Moderate 59 of 362 days1995: Unhealthy for Sensitive Groups 19 of 362 days1995: Unhealthy 2 of 362 days1996: Good 313 of 362 days1996: Moderate 42 of 362 days1996: Unhealthy for Sensitive Groups 5 of 362 days1996: Unhealthy 2 of 362 days19961997: Good 293 of 363 days1997: Moderate 53 of 363 days1997: Unhealthy for Sensitive Groups 11 of 363 days1997: Unhealthy 6 of 363 days1998: Good 333 of 361 days1998: Moderate 24 of 361 days1998: Unhealthy for Sensitive Groups 4 of 361 days1999: Good 278 of 365 days1999: Moderate 69 of 365 days1999: Unhealthy for Sensitive Groups 15 of 365 days1999: Unhealthy 3 of 365 days2000: Good 281 of 362 days2000: Moderate 66 of 362 days2000: Unhealthy for Sensitive Groups 14 of 362 days2000: Unhealthy 1 of 362 days2001: Good 322 of 359 days2001: Moderate 35 of 359 days2001: Unhealthy for Sensitive Groups 2 of 359 days20012002: Good 321 of 360 days2002: Moderate 32 of 360 days2002: Unhealthy for Sensitive Groups 7 of 360 days2003: Good 289 of 341 days2003: Moderate 35 of 341 days2003: Unhealthy for Sensitive Groups 15 of 341 days2003: Unhealthy 1 of 341 days2003: Very Unhealthy 1 of 341 days2004: Good 310 of 355 days2004: Moderate 35 of 355 days2004: Unhealthy for Sensitive Groups 10 of 355 days2005: Good 225 of 323 days2005: Moderate 77 of 323 days2005: Unhealthy for Sensitive Groups 17 of 323 days2005: Unhealthy 3 of 323 days2005: Very Unhealthy 1 of 323 days2006: Good 279 of 353 days2006: Moderate 52 of 353 days2006: Unhealthy for Sensitive Groups 17 of 353 days2006: Unhealthy 5 of 353 days20062007: Good 282 of 361 days2007: Moderate 63 of 361 days2007: Unhealthy for Sensitive Groups 15 of 361 days2007: Unhealthy 1 of 361 days2008: Good 284 of 344 days2008: Moderate 52 of 344 days2008: Unhealthy for Sensitive Groups 8 of 344 days2009: Good 324 of 356 days2009: Moderate 27 of 356 days2009: Unhealthy for Sensitive Groups 5 of 356 days2010: Good 286 of 362 days2010: Moderate 66 of 362 days2010: Unhealthy for Sensitive Groups 10 of 362 days2011: Good 313 of 365 days2011: Moderate 41 of 365 days2011: Unhealthy for Sensitive Groups 10 of 365 days2011: Unhealthy 1 of 365 days20112012: Good 281 of 361 days2012: Moderate 71 of 361 days2012: Unhealthy for Sensitive Groups 9 of 361 days2013: Good 307 of 344 days2013: Moderate 36 of 344 days2013: Unhealthy for Sensitive Groups 1 of 344 days2014: Good 302 of 327 days2014: Moderate 20 of 327 days2014: Unhealthy for Sensitive Groups 5 of 327 days2015: Good 337 of 364 days2015: Moderate 25 of 364 days2015: Unhealthy for Sensitive Groups 2 of 364 days2016: Good 346 of 365 days2016: Moderate 19 of 365 days20162017: Good 343 of 363 days2017: Moderate 18 of 363 days2017: Unhealthy for Sensitive Groups 2 of 363 days2018: Good 324 of 356 days2018: Moderate 32 of 356 days2019: Good 322 of 351 days2019: Moderate 26 of 351 days2019: Unhealthy for Sensitive Groups 3 of 351 days2020: Good 343 of 362 days2020: Moderate 19 of 362 days2021: Good 353 of 365 days2021: Moderate 12 of 365 days20212022: Good 323 of 346 days2022: Moderate 22 of 346 days2022: Unhealthy for Sensitive Groups 1 of 346 days2023: Good 323 of 362 days2023: Moderate 36 of 362 days2023: Unhealthy for Sensitive Groups 3 of 362 days2024: Good 328 of 355 days2024: Moderate 26 of 355 days2024: Unhealthy for Sensitive Groups 1 of 355 days2025: Good 342 of 365 days2025: Moderate 23 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 year0501001983: 90th percentile AQI 841984: 90th percentile AQI 541988: 90th percentile AQI 371989: 90th percentile AQI 741990: 90th percentile AQI 931991: 90th percentile AQI 611992: 90th percentile AQI 581993: 90th percentile AQI 711994: 90th percentile AQI 771995: 90th percentile AQI 801996: 90th percentile AQI 581997: 90th percentile AQI 771998: 90th percentile AQI 481999: 90th percentile AQI 872000: 90th percentile AQI 842001: 90th percentile AQI 512002: 90th percentile AQI 512003: 90th percentile AQI 672004: 90th percentile AQI 582005: 90th percentile AQI 802006: 90th percentile AQI 872007: 90th percentile AQI 842008: 90th percentile AQI 642009: 90th percentile AQI 502010: 90th percentile AQI 742011: 90th percentile AQI 642012: 90th percentile AQI 772013: 90th percentile AQI 512014: 90th percentile AQI 492015: 90th percentile AQI 482016: 90th percentile AQI 472017: 90th percentile AQI 442018: 90th percentile AQI 482019: 90th percentile AQI 492020: 90th percentile AQI 452021: 90th percentile AQI 442022: 90th percentile AQI 482023: 90th percentile AQI 512024: 90th percentile AQI 482025: 90th percentile AQI 481983: Median AQI 341984: Median AQI 311988: Median AQI 271989: Median AQI 341990: Median AQI 391991: Median AQI 361992: Median AQI 341993: Median AQI 351994: Median AQI 371995: Median AQI 391996: Median AQI 341997: Median AQI 371998: Median AQI 331999: Median AQI 382000: Median AQI 372001: Median AQI 312002: Median AQI 342003: Median AQI 362004: Median AQI 332005: Median AQI 412006: Median AQI 412007: Median AQI 402008: Median AQI 372009: Median AQI 382010: Median AQI 412011: Median AQI 382012: Median AQI 412013: Median AQI 372014: Median AQI 342015: Median AQI 322016: Median AQI 332017: Median AQI 322018: Median AQI 312019: Median AQI 332020: Median AQI 322021: Median AQI 322022: Median AQI 342023: Median AQI 362024: Median AQI 362025: Median AQI 35198319911996200120062011201620212025
  • 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
Ozone365100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025365342230000354893Ozone
20243553282610003648101Ozone
20233623233630003651112Ozone
20223463232210003448112Ozone
20213653531200003244100Ozone
20203623431900003245100Ozone
20193513222630003349112Ozone
2018356324320000314897Ozone
20173633431820003244105Ozone
20163653461900003347100Ozone
20153643372520003248122Ozone
20143273022050003449140Ozone
20133443073610003751101Ozone
20123612817190004177150Ozone
201136531341101003864151Ozone
201036228666100004174143Ozone
20093563242750003850133Ozone
20083442845280003764143Ozone
200736128263151004084154Ozone
200635327952175004187195Ozone
200532322577173104180201Ozone
200435531035100003358140Ozone
200334128935151103667204Ozone
20023603213270003451147Ozone
20013593223520003151150Ozone
200036228166141003784172Ozone
199936527869153003887200Ozone
19983613332440003348129Ozone
199736329353116003777182Ozone
19963623134252003458172Ozone
199536228259192003980174Ozone
199436529455151003777151Ozone
19933643064792003571172Ozone
19923523103380103458202Ozone
19913522994184003661161Ozone
199036327460244103993229Ozone
198935829450112103474203Ozone
1988444310000273751Ozone
1984117103662003154200Ozone
1983123932532003484164Ozone

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 Louisiana with a similar median AQI in 2025

All monitored counties in Louisiana

Source: U.S. EPA AirData, “Annual AQI by County” files for 1983–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem