EnviroNearby

Bernalillo County, New Mexico air quality history

Daily Air Quality Index summaries from EPA monitors in Bernalillo, New Mexico, 1980–2025.

27%
Good days in 2025
58
Median daily AQI, 2025
21
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 Bernalillo, New Mexico on 365 days. 97 of those days (27%) were in the Good range, and the median daily AQI was 58. That median is higher than the typical monitored county in New Mexico (median 44 across 13 counties), and higher than the typical monitored U.S. county (40). The main pollutant was ozone on 173 days. Across the years with fuller monitoring, the share of Good days fell: an average of 35% in 1980–1982 versus 27% 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 160 of 366 days1980: Moderate 155 of 366 days1980: Unhealthy for Sensitive Groups 30 of 366 days1980: Unhealthy 12 of 366 days1980: Very Unhealthy 9 of 366 days19801981: Good 132 of 365 days1981: Moderate 159 of 365 days1981: Unhealthy for Sensitive Groups 25 of 365 days1981: Unhealthy 24 of 365 days1981: Very Unhealthy 25 of 365 days1982: Good 93 of 365 days1982: Moderate 224 of 365 days1982: Unhealthy for Sensitive Groups 26 of 365 days1982: Unhealthy 11 of 365 days1982: Very Unhealthy 11 of 365 days1983: Good 98 of 365 days1983: Moderate 206 of 365 days1983: Unhealthy for Sensitive Groups 41 of 365 days1983: Unhealthy 13 of 365 days1983: Very Unhealthy 7 of 365 days1984: Good 119 of 366 days1984: Moderate 196 of 366 days1984: Unhealthy for Sensitive Groups 42 of 366 days1984: Unhealthy 6 of 366 days1984: Very Unhealthy 3 of 366 days1985: Good 146 of 365 days1985: Moderate 203 of 365 days1985: Unhealthy for Sensitive Groups 13 of 365 days1985: Very Unhealthy 3 of 365 days19851986: Good 181 of 365 days1986: Moderate 150 of 365 days1986: Unhealthy for Sensitive Groups 30 of 365 days1986: Unhealthy 4 of 365 days1987: Good 156 of 365 days1987: Moderate 180 of 365 days1987: Unhealthy for Sensitive Groups 22 of 365 days1987: Unhealthy 4 of 365 days1987: Very Unhealthy 3 of 365 days1988: Good 152 of 366 days1988: Moderate 195 of 366 days1988: Unhealthy for Sensitive Groups 17 of 366 days1988: Unhealthy 2 of 366 days1989: Good 130 of 365 days1989: Moderate 209 of 365 days1989: Unhealthy for Sensitive Groups 24 of 365 days1989: Unhealthy 2 of 365 days1990: Good 191 of 365 days1990: Moderate 155 of 365 days1990: Unhealthy for Sensitive Groups 17 of 365 days1990: Unhealthy 2 of 365 days19901991: Good 204 of 365 days1991: Moderate 155 of 365 days1991: Unhealthy for Sensitive Groups 6 of 365 days1992: Good 216 of 366 days1992: Moderate 144 of 366 days1992: Unhealthy for Sensitive Groups 6 of 366 days1993: Good 208 of 365 days1993: Moderate 152 of 365 days1993: Unhealthy for Sensitive Groups 5 of 365 days1994: Good 175 of 365 days1994: Moderate 179 of 365 days1994: Unhealthy for Sensitive Groups 10 of 365 days1994: Unhealthy 1 of 365 days1995: Good 205 of 365 days1995: Moderate 154 of 365 days1995: Unhealthy for Sensitive Groups 6 of 365 days19951996: Good 136 of 366 days1996: Moderate 216 of 366 days1996: Unhealthy for Sensitive Groups 14 of 366 days1997: Good 187 of 365 days1997: Moderate 168 of 365 days1997: Unhealthy for Sensitive Groups 10 of 365 days1998: Good 186 of 365 days1998: Moderate 161 of 365 days1998: Unhealthy for Sensitive Groups 18 of 365 days1999: Good 157 of 365 days1999: Moderate 193 of 365 days1999: Unhealthy for Sensitive Groups 14 of 365 days1999: Unhealthy 1 of 365 days2000: Good 120 of 366 days2000: Moderate 214 of 366 days2000: Unhealthy for Sensitive Groups 32 of 366 days20002001: Good 133 of 365 days2001: Moderate 216 of 365 days2001: Unhealthy for Sensitive Groups 16 of 365 days2002: Good 127 of 365 days2002: Moderate 212 of 365 days2002: Unhealthy for Sensitive Groups 24 of 365 days2002: Hazardous 2 of 365 days2003: Good 96 of 365 days2003: Moderate 213 of 365 days2003: Unhealthy for Sensitive Groups 52 of 365 days2003: Unhealthy 4 of 365 days2004: Good 121 of 366 days2004: Moderate 226 of 366 days2004: Unhealthy for Sensitive Groups 18 of 366 days2004: Unhealthy 1 of 366 days2005: Good 141 of 365 days2005: Moderate 200 of 365 days2005: Unhealthy for Sensitive Groups 22 of 365 days2005: Unhealthy 2 of 365 days20052006: Good 117 of 365 days2006: Moderate 226 of 365 days2006: Unhealthy for Sensitive Groups 19 of 365 days2006: Unhealthy 1 of 365 days2006: Very Unhealthy 2 of 365 days2007: Good 55 of 365 days2007: Moderate 285 of 365 days2007: Unhealthy for Sensitive Groups 24 of 365 days2007: Unhealthy 1 of 365 days2008: Good 90 of 366 days2008: Moderate 270 of 366 days2008: Unhealthy for Sensitive Groups 6 of 366 days2009: Good 108 of 365 days2009: Moderate 254 of 365 days2009: Unhealthy for Sensitive Groups 3 of 365 days2010: Good 77 of 365 days2010: Moderate 283 of 365 days2010: Unhealthy for Sensitive Groups 5 of 365 days20102011: Good 61 of 365 days2011: Moderate 276 of 365 days2011: Unhealthy for Sensitive Groups 25 of 365 days2011: Unhealthy 2 of 365 days2011: Very Unhealthy 1 of 365 days2012: Good 67 of 366 days2012: Moderate 274 of 366 days2012: Unhealthy for Sensitive Groups 23 of 366 days2012: Unhealthy 1 of 366 days2012: Very Unhealthy 1 of 366 days2013: Good 97 of 365 days2013: Moderate 262 of 365 days2013: Unhealthy for Sensitive Groups 6 of 365 days2014: Good 156 of 365 days2014: Moderate 208 of 365 days2014: Unhealthy for Sensitive Groups 1 of 365 days2015: Good 166 of 365 days2015: Moderate 195 of 365 days2015: Unhealthy for Sensitive Groups 4 of 365 days20152016: Good 170 of 366 days2016: Moderate 193 of 366 days2016: Unhealthy for Sensitive Groups 3 of 366 days2017: Good 145 of 365 days2017: Moderate 216 of 365 days2017: Unhealthy for Sensitive Groups 4 of 365 days2018: Good 137 of 365 days2018: Moderate 209 of 365 days2018: Unhealthy for Sensitive Groups 18 of 365 days2018: Unhealthy 1 of 365 days2019: Good 134 of 365 days2019: Moderate 227 of 365 days2019: Unhealthy for Sensitive Groups 4 of 365 days2020: Good 105 of 366 days2020: Moderate 252 of 366 days2020: Unhealthy for Sensitive Groups 7 of 366 days2020: Unhealthy 1 of 366 days2020: Very Unhealthy 1 of 366 days20202021: Good 60 of 365 days2021: Moderate 284 of 365 days2021: Unhealthy for Sensitive Groups 19 of 365 days2021: Unhealthy 2 of 365 days2022: Good 81 of 365 days2022: Moderate 251 of 365 days2022: Unhealthy for Sensitive Groups 28 of 365 days2022: Unhealthy 2 of 365 days2022: Very Unhealthy 1 of 365 days2022: Hazardous 2 of 365 days2023: Good 97 of 365 days2023: Moderate 264 of 365 days2023: Unhealthy for Sensitive Groups 3 of 365 days2023: Very Unhealthy 1 of 365 days2024: Good 100 of 366 days2024: Moderate 236 of 366 days2024: Unhealthy for Sensitive Groups 25 of 366 days2024: Unhealthy 4 of 366 days2024: Hazardous 1 of 366 days2025: Good 97 of 365 days2025: Moderate 247 of 365 days2025: Unhealthy for Sensitive Groups 18 of 365 days2025: Unhealthy 2 of 365 days2025: Very Unhealthy 1 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 1181981: 90th percentile AQI 1661982: 90th percentile AQI 1191983: 90th percentile AQI 1231984: 90th percentile AQI 1151985: 90th percentile AQI 871986: 90th percentile AQI 971987: 90th percentile AQI 971988: 90th percentile AQI 901989: 90th percentile AQI 951990: 90th percentile AQI 871991: 90th percentile AQI 741992: 90th percentile AQI 771993: 90th percentile AQI 741994: 90th percentile AQI 781995: 90th percentile AQI 771996: 90th percentile AQI 871997: 90th percentile AQI 801998: 90th percentile AQI 871999: 90th percentile AQI 902000: 90th percentile AQI 1002001: 90th percentile AQI 902002: 90th percentile AQI 932003: 90th percentile AQI 1082004: 90th percentile AQI 852005: 90th percentile AQI 902006: 90th percentile AQI 902007: 90th percentile AQI 932008: 90th percentile AQI 842009: 90th percentile AQI 782010: 90th percentile AQI 812011: 90th percentile AQI 1002012: 90th percentile AQI 962013: 90th percentile AQI 802014: 90th percentile AQI 742015: 90th percentile AQI 742016: 90th percentile AQI 732017: 90th percentile AQI 782018: 90th percentile AQI 902019: 90th percentile AQI 772020: 90th percentile AQI 782021: 90th percentile AQI 922022: 90th percentile AQI 972023: 90th percentile AQI 842024: 90th percentile AQI 972025: 90th percentile AQI 881980: Median AQI 541981: Median AQI 611982: Median AQI 641983: Median AQI 641984: Median AQI 611985: Median AQI 541986: Median AQI 511987: Median AQI 551988: Median AQI 541989: Median AQI 581990: Median AQI 501991: Median AQI 491992: Median AQI 491993: Median AQI 491994: Median AQI 511995: Median AQI 491996: Median AQI 561997: Median AQI 501998: Median AQI 501999: Median AQI 542000: Median AQI 582001: Median AQI 562002: Median AQI 562003: Median AQI 642004: Median AQI 582005: Median AQI 552006: Median AQI 572007: Median AQI 642008: Median AQI 592009: Median AQI 572010: Median AQI 612011: Median AQI 642012: Median AQI 622013: Median AQI 562014: Median AQI 522015: Median AQI 512016: Median AQI 522017: Median AQI 532018: Median AQI 572019: Median AQI 552020: Median AQI 572021: Median AQI 632022: Median AQI 632023: Median AQI 592024: Median AQI 612025: Median AQI 581980198519901995200020052010201520202025
  • 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
Ozone17347%
Coarse particles (PM10)8523%
Fine particles (PM2.5)7320%
Nitrogen dioxide (NO₂)349%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
202536597247182105888204Ozone
2024366100236254016197443Ozone
20233659726430105984207Ozone
202236581251282126397825Ozone
202136560284192006392171Ozone
202036610525271105778214Ozone
201936513422740005577108Ozone
2018365137209181005790165Ozone
201736514521640005378119Ozone
201636617019330005273143Ozone
201536516619540005174108Ozone
201436515620810005274105Ozone
20133659726260005680145PM2.5
201236667274231106296291Ozone
2011365612762521064100293PM2.5
20103657728350006181146PM2.5
200936510825430005778115Ozone
20083669027060005984143PM2.5
200736555285241006493178Ozone
2006365117226191205790212Ozone
2005365141200222005590169Ozone
2004366121226181005885161Ozone
2003365962135240064108168Ozone
2002365127212240025693403Ozone
2001365133216160005690150Ozone
20003661202143200058100147Ozone
1999365157193141005490151Ozone
1998365186161180005087129Ozone
1997365187168100005080122Ozone
1996366136216140005687147Ozone
199536520515460004977136Ozone
1994365175179101005178151Ozone
199336520815250004974107NO2
199236621614460004977119Ozone
199136520415560004974125Ozone
1990365191155172005087169Ozone
1989365130209242005895186Ozone
1988366152195172005490181Ozone
1987365156180224305597207Ozone
1986365181150304005197195Ozone
1985365146203130305487218Ozone
19843661191964263061115207CO
19833659820641137064123221CO
198236593224261111064119230CO
1981365132159252425061166248Ozone
198036616015530129054118257Ozone

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 Mexico with a similar median AQI in 2025

All monitored counties in New Mexico

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