EnviroNearby

Dutchess County, New York air quality history

Daily Air Quality Index summaries from EPA monitors in Dutchess, New York, 1980–2025.

94%
Good days in 2025
34
Median daily AQI, 2025
3
Days above 100 in 2025
364
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Dutchess, New York on 364 days. 342 of those days (94%) were in the Good range, and the median daily AQI was 34. That median is about the same as the typical monitored county in New York (median 36 across 27 counties), and lower than the typical monitored U.S. county (40). The main pollutant was ozone on 364 days. Across the years with fuller monitoring, the share of Good days held roughly steady: an average of 93% in 1980–1982 versus 94% 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 337 of 366 days1980: Moderate 23 of 366 days1980: Unhealthy for Sensitive Groups 5 of 366 days1980: Very Unhealthy 1 of 366 days19801981: Good 332 of 357 days1981: Moderate 21 of 357 days1981: Unhealthy for Sensitive Groups 3 of 357 days1981: Unhealthy 1 of 357 days1982: Good 346 of 365 days1982: Moderate 17 of 365 days1982: Unhealthy for Sensitive Groups 2 of 365 days1983: Good 326 of 358 days1983: Moderate 22 of 358 days1983: Unhealthy for Sensitive Groups 8 of 358 days1983: Unhealthy 2 of 358 days1984: Good 351 of 356 days1984: Moderate 4 of 356 days1984: Unhealthy for Sensitive Groups 1 of 356 days1985: Good 364 of 364 days19851986: Good 342 of 361 days1986: Moderate 15 of 361 days1986: Unhealthy for Sensitive Groups 3 of 361 days1986: Very Unhealthy 1 of 361 days1987: Good 330 of 352 days1987: Moderate 18 of 352 days1987: Unhealthy for Sensitive Groups 3 of 352 days1987: Unhealthy 1 of 352 days1988: Good 316 of 356 days1988: Moderate 16 of 356 days1988: Unhealthy for Sensitive Groups 13 of 356 days1988: Unhealthy 9 of 356 days1988: Very Unhealthy 2 of 356 days1989: Good 335 of 343 days1989: Moderate 6 of 343 days1989: Unhealthy for Sensitive Groups 1 of 343 days1989: Unhealthy 1 of 343 days1990: Good 313 of 354 days1990: Moderate 29 of 354 days1990: Unhealthy for Sensitive Groups 9 of 354 days1990: Unhealthy 3 of 354 days19901991: Good 274 of 349 days1991: Moderate 44 of 349 days1991: Unhealthy for Sensitive Groups 19 of 349 days1991: Unhealthy 11 of 349 days1991: Very Unhealthy 1 of 349 days1992: Good 264 of 299 days1992: Moderate 24 of 299 days1992: Unhealthy for Sensitive Groups 4 of 299 days1992: Unhealthy 7 of 299 days1993: Good 286 of 361 days1993: Moderate 48 of 361 days1993: Unhealthy for Sensitive Groups 18 of 361 days1993: Unhealthy 7 of 361 days1993: Very Unhealthy 2 of 361 days1994: Good 300 of 363 days1994: Moderate 45 of 363 days1994: Unhealthy for Sensitive Groups 14 of 363 days1994: Unhealthy 4 of 363 days1995: Good 301 of 359 days1995: Moderate 38 of 359 days1995: Unhealthy for Sensitive Groups 14 of 359 days1995: Unhealthy 6 of 359 days19951996: Good 302 of 356 days1996: Moderate 36 of 356 days1996: Unhealthy for Sensitive Groups 12 of 356 days1996: Unhealthy 6 of 356 days1997: Good 303 of 352 days1997: Moderate 33 of 352 days1997: Unhealthy for Sensitive Groups 10 of 352 days1997: Unhealthy 6 of 352 days1998: Good 288 of 364 days1998: Moderate 50 of 364 days1998: Unhealthy for Sensitive Groups 19 of 364 days1998: Unhealthy 7 of 364 days1999: Good 271 of 362 days1999: Moderate 66 of 362 days1999: Unhealthy for Sensitive Groups 17 of 362 days1999: Unhealthy 8 of 362 days2000: Good 278 of 365 days2000: Moderate 73 of 365 days2000: Unhealthy for Sensitive Groups 12 of 365 days2000: Unhealthy 2 of 365 days20002001: Good 226 of 331 days2001: Moderate 82 of 331 days2001: Unhealthy for Sensitive Groups 15 of 331 days2001: Unhealthy 8 of 331 days2002: Good 212 of 312 days2002: Moderate 81 of 312 days2002: Unhealthy for Sensitive Groups 10 of 312 days2002: Unhealthy 5 of 312 days2002: Very Unhealthy 4 of 312 days2003: Good 283 of 343 days2003: Moderate 53 of 343 days2003: Unhealthy for Sensitive Groups 7 of 343 days2004: Good 336 of 355 days2004: Moderate 15 of 355 days2004: Unhealthy for Sensitive Groups 3 of 355 days2004: Unhealthy 1 of 355 days2005: Good 326 of 357 days2005: Moderate 25 of 357 days2005: Unhealthy for Sensitive Groups 4 of 357 days2005: Unhealthy 2 of 357 days20052006: Good 333 of 351 days2006: Moderate 17 of 351 days2006: Unhealthy for Sensitive Groups 1 of 351 days2007: Good 320 of 360 days2007: Moderate 24 of 360 days2007: Unhealthy for Sensitive Groups 15 of 360 days2007: Unhealthy 1 of 360 days2008: Good 322 of 359 days2008: Moderate 30 of 359 days2008: Unhealthy for Sensitive Groups 4 of 359 days2008: Unhealthy 3 of 359 days2009: Good 337 of 361 days2009: Moderate 21 of 361 days2009: Unhealthy for Sensitive Groups 3 of 361 days2010: Good 320 of 361 days2010: Moderate 35 of 361 days2010: Unhealthy for Sensitive Groups 5 of 361 days2010: Unhealthy 1 of 361 days20102011: Good 310 of 333 days2011: Moderate 19 of 333 days2011: Unhealthy for Sensitive Groups 3 of 333 days2011: Unhealthy 1 of 333 days2012: Good 312 of 343 days2012: Moderate 26 of 343 days2012: Unhealthy for Sensitive Groups 5 of 343 days2013: Good 335 of 356 days2013: Moderate 21 of 356 days2014: Good 332 of 357 days2014: Moderate 24 of 357 days2014: Unhealthy for Sensitive Groups 1 of 357 days2015: Good 337 of 358 days2015: Moderate 19 of 358 days2015: Unhealthy for Sensitive Groups 2 of 358 days20152016: Good 324 of 353 days2016: Moderate 24 of 353 days2016: Unhealthy for Sensitive Groups 5 of 353 days2017: Good 338 of 355 days2017: Moderate 16 of 355 days2017: Unhealthy for Sensitive Groups 1 of 355 days2018: Good 327 of 349 days2018: Moderate 20 of 349 days2018: Unhealthy for Sensitive Groups 1 of 349 days2018: Unhealthy 1 of 349 days2019: Good 319 of 331 days2019: Moderate 12 of 331 days2020: Good 322 of 331 days2020: Moderate 9 of 331 days20202021: Good 323 of 341 days2021: Moderate 17 of 341 days2021: Unhealthy for Sensitive Groups 1 of 341 days2022: Good 321 of 341 days2022: Moderate 20 of 341 days2023: Good 333 of 347 days2023: Moderate 13 of 347 days2023: Unhealthy for Sensitive Groups 1 of 347 days2024: Good 338 of 366 days2024: Moderate 23 of 366 days2024: Unhealthy for Sensitive Groups 4 of 366 days2024: Unhealthy 1 of 366 days2025: Good 342 of 364 days2025: Moderate 19 of 364 days2025: Unhealthy for Sensitive Groups 3 of 364 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 451981: 90th percentile AQI 461982: 90th percentile AQI 441983: 90th percentile AQI 491984: 90th percentile AQI 351985: 90th percentile AQI 241986: 90th percentile AQI 421987: 90th percentile AQI 481988: 90th percentile AQI 611989: 90th percentile AQI 391990: 90th percentile AQI 511991: 90th percentile AQI 1001992: 90th percentile AQI 641993: 90th percentile AQI 901994: 90th percentile AQI 771995: 90th percentile AQI 841996: 90th percentile AQI 671997: 90th percentile AQI 611998: 90th percentile AQI 871999: 90th percentile AQI 782000: 90th percentile AQI 702001: 90th percentile AQI 842002: 90th percentile AQI 772003: 90th percentile AQI 642004: 90th percentile AQI 462005: 90th percentile AQI 492006: 90th percentile AQI 432007: 90th percentile AQI 612008: 90th percentile AQI 512009: 90th percentile AQI 452010: 90th percentile AQI 542011: 90th percentile AQI 462012: 90th percentile AQI 502013: 90th percentile AQI 472014: 90th percentile AQI 482015: 90th percentile AQI 462016: 90th percentile AQI 492017: 90th percentile AQI 452018: 90th percentile AQI 462019: 90th percentile AQI 452020: 90th percentile AQI 452021: 90th percentile AQI 462022: 90th percentile AQI 482023: 90th percentile AQI 462024: 90th percentile AQI 472025: 90th percentile AQI 461980: Median AQI 211981: Median AQI 271982: Median AQI 231983: Median AQI 241984: Median AQI 191985: Median AQI 161986: Median AQI 231987: Median AQI 291988: Median AQI 291989: Median AQI 251990: Median AQI 301991: Median AQI 371992: Median AQI 341993: Median AQI 351994: Median AQI 331995: Median AQI 331996: Median AQI 351997: Median AQI 341998: Median AQI 351999: Median AQI 392000: Median AQI 372001: Median AQI 412002: Median AQI 392003: Median AQI 352004: Median AQI 312005: Median AQI 312006: Median AQI 282007: Median AQI 322008: Median AQI 332009: Median AQI 312010: Median AQI 342011: Median AQI 342012: Median AQI 322013: Median AQI 332014: Median AQI 342015: Median AQI 332016: Median AQI 342017: Median AQI 322018: Median AQI 312019: Median AQI 342020: Median AQI 352021: Median AQI 342022: Median AQI 352023: Median AQI 332024: Median AQI 352025: Median AQI 341980198519901995200020052010201520202025
  • 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
Ozone364100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
20253643421930003446140Ozone
20243663382341003547151Ozone
20233473331310003346108Ozone
2022341321200000354897Ozone
20213413231710003446129Ozone
202033132290000354587Ozone
2019331319120000344590Ozone
20183493272011003146156Ozone
20173553381610003245101Ozone
20163533242450003449122Ozone
20153583371920003346133Ozone
20143573322410003448101Ozone
20133563352100003347100Ozone
20123433122650003250119Ozone
20113333101931003446185Ozone
20103613203551003454166Ozone
20093613372130003145122Ozone
20083593223043003351156Ozone
200736032024151003261156Ozone
20063513331710002843108Ozone
20053573262542003149161Ozone
20043553361531003146185Ozone
20033432835370003564143Ozone
200231221281105403977234Ozone
200133122682158004184187Ozone
200036527873122003770182Ozone
199936227166178003978195Ozone
199836428850197003587192Ozone
199735230333106003461185Ozone
199635630236126003567185Ozone
199535930138146003384185Ozone
199436330045144003377195Ozone
199336128648187203590222Ozone
19922992642447003464195Ozone
19913492744419111037100209Ozone
19903543132993003051172Ozone
1989343335611002539151Ozone
198835631616139202961222Ozone
19873523301831002948164Ozone
19863613421530102342204Ozone
198536436400000162444Ozone
1984356351410001935133Ozone
19833583262282002449177Ozone
19823653461720002344115Ozone
19813573322131002746166Ozone
19803663372350102145201Ozone

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 New York with a similar median AQI in 2025

All monitored counties in New York

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