EnviroNearby

Richmond County, New York air quality history

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

74%
Good days in 2025
41
Median daily AQI, 2025
3
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 Richmond, New York on 365 days. 270 of those days (74%) were in the Good range, and the median daily AQI was 41. That median is higher than the typical monitored county in New York (median 36 across 27 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 191 days. Across the years with fuller monitoring, the share of Good days rose: an average of 61% in 1980–1982 versus 74% 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 131 of 230 days1980: Moderate 51 of 230 days1980: Unhealthy for Sensitive Groups 20 of 230 days1980: Unhealthy 22 of 230 days1980: Very Unhealthy 6 of 230 days19801981: Good 147 of 234 days1981: Moderate 32 of 234 days1981: Unhealthy for Sensitive Groups 33 of 234 days1981: Unhealthy 12 of 234 days1981: Very Unhealthy 10 of 234 days1982: Good 138 of 216 days1982: Moderate 35 of 216 days1982: Unhealthy for Sensitive Groups 22 of 216 days1982: Unhealthy 14 of 216 days1982: Very Unhealthy 7 of 216 days1983: Good 137 of 230 days1983: Moderate 33 of 230 days1983: Unhealthy for Sensitive Groups 24 of 230 days1983: Unhealthy 22 of 230 days1983: Very Unhealthy 14 of 230 days1984: Good 154 of 233 days1984: Moderate 37 of 233 days1984: Unhealthy for Sensitive Groups 21 of 233 days1984: Unhealthy 14 of 233 days1984: Very Unhealthy 7 of 233 days1985: Good 138 of 232 days1985: Moderate 51 of 232 days1985: Unhealthy for Sensitive Groups 22 of 232 days1985: Unhealthy 15 of 232 days1985: Very Unhealthy 6 of 232 days19851986: Good 146 of 235 days1986: Moderate 43 of 235 days1986: Unhealthy for Sensitive Groups 28 of 235 days1986: Unhealthy 12 of 235 days1986: Very Unhealthy 6 of 235 days1987: Good 164 of 238 days1987: Moderate 35 of 238 days1987: Unhealthy for Sensitive Groups 21 of 238 days1987: Unhealthy 12 of 238 days1987: Very Unhealthy 6 of 238 days1988: Good 156 of 225 days1988: Moderate 22 of 225 days1988: Unhealthy for Sensitive Groups 19 of 225 days1988: Unhealthy 15 of 225 days1988: Very Unhealthy 13 of 225 days1989: Good 142 of 208 days1989: Moderate 38 of 208 days1989: Unhealthy for Sensitive Groups 16 of 208 days1989: Unhealthy 11 of 208 days1989: Very Unhealthy 1 of 208 days1990: Good 187 of 252 days1990: Moderate 39 of 252 days1990: Unhealthy for Sensitive Groups 15 of 252 days1990: Unhealthy 8 of 252 days1990: Very Unhealthy 3 of 252 days19901991: Good 160 of 227 days1991: Moderate 30 of 227 days1991: Unhealthy for Sensitive Groups 20 of 227 days1991: Unhealthy 13 of 227 days1991: Very Unhealthy 4 of 227 days1992: Good 151 of 161 days1992: Moderate 6 of 161 days1992: Unhealthy for Sensitive Groups 2 of 161 days1992: Unhealthy 2 of 161 days1993: Good 129 of 180 days1993: Moderate 32 of 180 days1993: Unhealthy for Sensitive Groups 12 of 180 days1993: Unhealthy 7 of 180 days1994: Good 176 of 246 days1994: Moderate 41 of 246 days1994: Unhealthy for Sensitive Groups 20 of 246 days1994: Unhealthy 8 of 246 days1994: Very Unhealthy 1 of 246 days1995: Good 204 of 261 days1995: Moderate 33 of 261 days1995: Unhealthy for Sensitive Groups 11 of 261 days1995: Unhealthy 10 of 261 days1995: Very Unhealthy 3 of 261 days19951996: Good 163 of 236 days1996: Moderate 45 of 236 days1996: Unhealthy for Sensitive Groups 21 of 236 days1996: Unhealthy 7 of 236 days1997: Good 160 of 233 days1997: Moderate 35 of 233 days1997: Unhealthy for Sensitive Groups 18 of 233 days1997: Unhealthy 15 of 233 days1997: Very Unhealthy 5 of 233 days1998: Good 162 of 232 days1998: Moderate 41 of 232 days1998: Unhealthy for Sensitive Groups 20 of 232 days1998: Unhealthy 8 of 232 days1998: Very Unhealthy 1 of 232 days1999: Good 151 of 233 days1999: Moderate 50 of 233 days1999: Unhealthy for Sensitive Groups 16 of 233 days1999: Unhealthy 13 of 233 days1999: Very Unhealthy 3 of 233 days2000: Good 136 of 264 days2000: Moderate 103 of 264 days2000: Unhealthy for Sensitive Groups 15 of 264 days2000: Unhealthy 9 of 264 days2000: Very Unhealthy 1 of 264 days20002001: Good 133 of 268 days2001: Moderate 106 of 268 days2001: Unhealthy for Sensitive Groups 20 of 268 days2001: Unhealthy 7 of 268 days2001: Very Unhealthy 2 of 268 days2002: Good 129 of 265 days2002: Moderate 93 of 265 days2002: Unhealthy for Sensitive Groups 25 of 265 days2002: Unhealthy 16 of 265 days2002: Very Unhealthy 2 of 265 days2003: Good 164 of 254 days2003: Moderate 71 of 254 days2003: Unhealthy for Sensitive Groups 15 of 254 days2003: Unhealthy 2 of 254 days2003: Very Unhealthy 2 of 254 days2004: Good 158 of 264 days2004: Moderate 92 of 264 days2004: Unhealthy for Sensitive Groups 12 of 264 days2004: Unhealthy 1 of 264 days2004: Very Unhealthy 1 of 264 days2005: Good 152 of 263 days2005: Moderate 89 of 263 days2005: Unhealthy for Sensitive Groups 14 of 263 days2005: Unhealthy 8 of 263 days20052006: Good 161 of 272 days2006: Moderate 93 of 272 days2006: Unhealthy for Sensitive Groups 12 of 272 days2006: Unhealthy 5 of 272 days2006: Very Unhealthy 1 of 272 days2007: Good 159 of 363 days2007: Moderate 188 of 363 days2007: Unhealthy for Sensitive Groups 14 of 363 days2007: Unhealthy 2 of 363 days2008: Good 137 of 366 days2008: Moderate 227 of 366 days2008: Unhealthy for Sensitive Groups 2 of 366 days2009: Good 187 of 365 days2009: Moderate 167 of 365 days2009: Unhealthy for Sensitive Groups 11 of 365 days2010: Good 204 of 365 days2010: Moderate 139 of 365 days2010: Unhealthy for Sensitive Groups 19 of 365 days2010: Unhealthy 2 of 365 days2010: Very Unhealthy 1 of 365 days20102011: Good 161 of 365 days2011: Moderate 187 of 365 days2011: Unhealthy for Sensitive Groups 13 of 365 days2011: Unhealthy 4 of 365 days2012: Good 178 of 361 days2012: Moderate 169 of 361 days2012: Unhealthy for Sensitive Groups 14 of 361 days2013: Good 206 of 365 days2013: Moderate 155 of 365 days2013: Unhealthy for Sensitive Groups 3 of 365 days2013: Unhealthy 1 of 365 days2014: Good 197 of 365 days2014: Moderate 162 of 365 days2014: Unhealthy for Sensitive Groups 5 of 365 days2014: Unhealthy 1 of 365 days2015: Good 179 of 365 days2015: Moderate 176 of 365 days2015: Unhealthy for Sensitive Groups 10 of 365 days20152016: Good 234 of 366 days2016: Moderate 122 of 366 days2016: Unhealthy for Sensitive Groups 9 of 366 days2016: Unhealthy 1 of 366 days2017: Good 252 of 365 days2017: Moderate 106 of 365 days2017: Unhealthy for Sensitive Groups 7 of 365 days2018: Good 229 of 363 days2018: Moderate 128 of 363 days2018: Unhealthy for Sensitive Groups 6 of 363 days2019: Good 275 of 365 days2019: Moderate 90 of 365 days2020: Good 280 of 364 days2020: Moderate 82 of 364 days2020: Unhealthy for Sensitive Groups 2 of 364 days20202021: Good 264 of 364 days2021: Moderate 94 of 364 days2021: Unhealthy for Sensitive Groups 6 of 364 days2022: Good 278 of 365 days2022: Moderate 86 of 365 days2022: Unhealthy for Sensitive Groups 1 of 365 days2023: Good 255 of 364 days2023: Moderate 101 of 364 days2023: Unhealthy for Sensitive Groups 3 of 364 days2023: Unhealthy 4 of 364 days2023: Very Unhealthy 1 of 364 days2024: Good 280 of 366 days2024: Moderate 83 of 366 days2024: Unhealthy for Sensitive Groups 3 of 366 days2025: Good 270 of 365 days2025: Moderate 92 of 365 days2025: Unhealthy for Sensitive Groups 3 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 year0501001502001980: 90th percentile AQI 1591981: 90th percentile AQI 1501982: 90th percentile AQI 1501983: 90th percentile AQI 1791984: 90th percentile AQI 1401985: 90th percentile AQI 1401986: 90th percentile AQI 1401987: 90th percentile AQI 1331988: 90th percentile AQI 1691989: 90th percentile AQI 1191990: 90th percentile AQI 1011991: 90th percentile AQI 1331992: 90th percentile AQI 441993: 90th percentile AQI 1011994: 90th percentile AQI 1151995: 90th percentile AQI 971996: 90th percentile AQI 1081997: 90th percentile AQI 1361998: 90th percentile AQI 1221999: 90th percentile AQI 1192000: 90th percentile AQI 1002001: 90th percentile AQI 1082002: 90th percentile AQI 1362003: 90th percentile AQI 872004: 90th percentile AQI 852005: 90th percentile AQI 962006: 90th percentile AQI 842007: 90th percentile AQI 822008: 90th percentile AQI 722009: 90th percentile AQI 752010: 90th percentile AQI 902011: 90th percentile AQI 742012: 90th percentile AQI 712013: 90th percentile AQI 672014: 90th percentile AQI 632015: 90th percentile AQI 762016: 90th percentile AQI 692017: 90th percentile AQI 612018: 90th percentile AQI 642019: 90th percentile AQI 602020: 90th percentile AQI 572021: 90th percentile AQI 612022: 90th percentile AQI 572023: 90th percentile AQI 622024: 90th percentile AQI 592025: 90th percentile AQI 611980: Median AQI 461981: Median AQI 421982: Median AQI 441983: Median AQI 451984: Median AQI 391985: Median AQI 441986: Median AQI 441987: Median AQI 401988: Median AQI 421989: Median AQI 421990: Median AQI 371991: Median AQI 391992: Median AQI 281993: Median AQI 371994: Median AQI 401995: Median AQI 361996: Median AQI 421997: Median AQI 421998: Median AQI 401999: Median AQI 442000: Median AQI 492001: Median AQI 522002: Median AQI 512003: Median AQI 432004: Median AQI 442005: Median AQI 442006: Median AQI 462007: Median AQI 532008: Median AQI 532009: Median AQI 502010: Median AQI 482011: Median AQI 522012: Median AQI 512013: Median AQI 472014: Median AQI 482015: Median AQI 512016: Median AQI 452017: Median AQI 442018: Median AQI 422019: Median AQI 412020: Median AQI 392021: Median AQI 422022: Median AQI 402023: Median AQI 422024: Median AQI 382025: Median AQI 411980198519901995200020052010201520202025
  • 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)19152%
Ozone17448%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
20253652709230004161129PM2.5
20243662808330003859140PM2.5
202336425510134104262227PM2.5
20223652788610004057105Ozone
20213642649460004261149PM2.5
20203642808220003957108PM2.5
2019365275900000416097PM2.5
201836322912860004264136PM2.5
201736525210670004461136PM2.5
201636623412291004569151Ozone
2015365179176100005176150PM2.5
201436519716251004863187PM2.5
201336520615531004767151PM2.5
2012361178169140005171147PM2.5
2011365161187134005274169PM2.5
2010365204139192104890208PM2.5
2009365187167110005075150PM2.5
200836613722720005372115PM2.5
2007363159188142005382179PM2.5
200627216193125104684208Ozone
200526315289148004496190Ozone
200426415892121104485201Ozone
200325416471152204387209Ozone
20022651299325162051136206Ozone
20012681331062072052108205Ozone
20002641361031591049100214Ozone
19992331515016133044119232Ozone
1998232162412081040122202Ozone
19972331603518155042136235Ozone
1996236163452170042108174Ozone
1995261204331110303697212Ozone
1994246176412081040115204Ozone
1993180129321270037101179Ozone
1992161151622002844197Ozone
19912271603020134039133241Ozone
1990252187391583037101207Ozone
19892081423816111042119206Ozone
198822515622191513042169227Ozone
19872381643521126040133262Ozone
19862351464328126044140236Ozone
19852321385122156044140237Ozone
19842331543721147039140251Ozone
198323013733242214045179222Ozone
19822161383522147044150240Ozone
198123414732331210042150279Ozone
19802301315120226046159225Ozone

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