EnviroNearby

Cumberland County, New Jersey air quality history

Daily Air Quality Index summaries from EPA monitors in Cumberland, New Jersey, 1980–2025.

76%
Good days in 2025
40
Median daily AQI, 2025
3
Days above 100 in 2025
362
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Cumberland, New Jersey on 362 days. 276 of those days (76%) were in the Good range, and the median daily AQI was 40. That median is about the same as the typical monitored county in New Jersey (median 40 across 15 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was ozone on 212 days. Across the years with fuller monitoring, the share of Good days rose: an average of 71% in 1980–1984 versus 77% 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 215 of 307 days1980: Moderate 52 of 307 days1980: Unhealthy for Sensitive Groups 31 of 307 days1980: Unhealthy 8 of 307 days1980: Very Unhealthy 1 of 307 days19801983: Good 217 of 326 days1983: Moderate 53 of 326 days1983: Unhealthy for Sensitive Groups 25 of 326 days1983: Unhealthy 21 of 326 days1983: Very Unhealthy 10 of 326 days1984: Good 264 of 343 days1984: Moderate 33 of 343 days1984: Unhealthy for Sensitive Groups 31 of 343 days1984: Unhealthy 15 of 343 days1985: Good 240 of 354 days1985: Moderate 58 of 354 days1985: Unhealthy for Sensitive Groups 31 of 354 days1985: Unhealthy 24 of 354 days1985: Very Unhealthy 1 of 354 days1986: Good 262 of 356 days1986: Moderate 50 of 356 days1986: Unhealthy for Sensitive Groups 26 of 356 days1986: Unhealthy 16 of 356 days1986: Very Unhealthy 2 of 356 days1987: Good 229 of 330 days1987: Moderate 30 of 330 days1987: Unhealthy for Sensitive Groups 38 of 330 days1987: Unhealthy 25 of 330 days1987: Very Unhealthy 8 of 330 days19871988: Good 253 of 353 days1988: Moderate 43 of 353 days1988: Unhealthy for Sensitive Groups 27 of 353 days1988: Unhealthy 18 of 353 days1988: Very Unhealthy 12 of 353 days1989: Good 253 of 337 days1989: Moderate 47 of 337 days1989: Unhealthy for Sensitive Groups 21 of 337 days1989: Unhealthy 11 of 337 days1989: Very Unhealthy 5 of 337 days1990: Good 265 of 348 days1990: Moderate 36 of 348 days1990: Unhealthy for Sensitive Groups 27 of 348 days1990: Unhealthy 15 of 348 days1990: Very Unhealthy 5 of 348 days1991: Good 239 of 338 days1991: Moderate 44 of 338 days1991: Unhealthy for Sensitive Groups 33 of 338 days1991: Unhealthy 18 of 338 days1991: Very Unhealthy 4 of 338 days1992: Good 290 of 347 days1992: Moderate 42 of 347 days1992: Unhealthy for Sensitive Groups 10 of 347 days1992: Unhealthy 4 of 347 days1992: Very Unhealthy 1 of 347 days19921993: Good 233 of 343 days1993: Moderate 45 of 343 days1993: Unhealthy for Sensitive Groups 33 of 343 days1993: Unhealthy 31 of 343 days1993: Very Unhealthy 1 of 343 days1994: Good 267 of 352 days1994: Moderate 47 of 352 days1994: Unhealthy for Sensitive Groups 34 of 352 days1994: Unhealthy 4 of 352 days1995: Good 283 of 362 days1995: Moderate 53 of 362 days1995: Unhealthy for Sensitive Groups 19 of 362 days1995: Unhealthy 5 of 362 days1995: Very Unhealthy 2 of 362 days1996: Good 281 of 355 days1996: Moderate 49 of 355 days1996: Unhealthy for Sensitive Groups 21 of 355 days1996: Unhealthy 4 of 355 days1997: Good 280 of 360 days1997: Moderate 47 of 360 days1997: Unhealthy for Sensitive Groups 21 of 360 days1997: Unhealthy 10 of 360 days1997: Very Unhealthy 2 of 360 days19971998: Good 266 of 365 days1998: Moderate 57 of 365 days1998: Unhealthy for Sensitive Groups 28 of 365 days1998: Unhealthy 14 of 365 days1999: Good 254 of 336 days1999: Moderate 44 of 336 days1999: Unhealthy for Sensitive Groups 22 of 336 days1999: Unhealthy 16 of 336 days2000: Good 296 of 366 days2000: Moderate 50 of 366 days2000: Unhealthy for Sensitive Groups 16 of 366 days2000: Unhealthy 2 of 366 days2000: Very Unhealthy 2 of 366 days2001: Good 263 of 350 days2001: Moderate 56 of 350 days2001: Unhealthy for Sensitive Groups 20 of 350 days2001: Unhealthy 9 of 350 days2001: Very Unhealthy 2 of 350 days2002: Good 271 of 365 days2002: Moderate 54 of 365 days2002: Unhealthy for Sensitive Groups 22 of 365 days2002: Unhealthy 16 of 365 days2002: Very Unhealthy 2 of 365 days20022003: Good 279 of 358 days2003: Moderate 54 of 358 days2003: Unhealthy for Sensitive Groups 22 of 358 days2003: Unhealthy 2 of 358 days2003: Very Unhealthy 1 of 358 days2004: Good 287 of 364 days2004: Moderate 63 of 364 days2004: Unhealthy for Sensitive Groups 13 of 364 days2004: Unhealthy 1 of 364 days2005: Good 290 of 356 days2005: Moderate 44 of 356 days2005: Unhealthy for Sensitive Groups 19 of 356 days2005: Unhealthy 2 of 356 days2005: Very Unhealthy 1 of 356 days2006: Good 137 of 354 days2006: Moderate 199 of 354 days2006: Unhealthy for Sensitive Groups 16 of 354 days2006: Unhealthy 2 of 354 days2007: Good 179 of 360 days2007: Moderate 159 of 360 days2007: Unhealthy for Sensitive Groups 20 of 360 days2007: Unhealthy 2 of 360 days20072008: Good 160 of 364 days2008: Moderate 188 of 364 days2008: Unhealthy for Sensitive Groups 16 of 364 days2009: Good 159 of 365 days2009: Moderate 202 of 365 days2009: Unhealthy for Sensitive Groups 4 of 365 days2010: Good 236 of 363 days2010: Moderate 116 of 363 days2010: Unhealthy for Sensitive Groups 11 of 363 days2011: Good 232 of 359 days2011: Moderate 125 of 359 days2011: Unhealthy for Sensitive Groups 2 of 359 days2012: Good 224 of 338 days2012: Moderate 98 of 338 days2012: Unhealthy for Sensitive Groups 13 of 338 days2012: Unhealthy 3 of 338 days20122013: Good 285 of 303 days2013: Moderate 18 of 303 days2014: Good 342 of 364 days2014: Moderate 21 of 364 days2014: Unhealthy for Sensitive Groups 1 of 364 days2015: Good 317 of 362 days2015: Moderate 43 of 362 days2015: Unhealthy for Sensitive Groups 2 of 362 days2016: Good 245 of 366 days2016: Moderate 120 of 366 days2016: Unhealthy for Sensitive Groups 1 of 366 days2017: Good 254 of 364 days2017: Moderate 110 of 364 days20172018: Good 241 of 365 days2018: Moderate 124 of 365 days2019: Good 254 of 361 days2019: Moderate 104 of 361 days2019: Unhealthy for Sensitive Groups 3 of 361 days2020: Good 251 of 365 days2020: Moderate 114 of 365 days2021: Good 291 of 364 days2021: Moderate 71 of 364 days2021: Unhealthy for Sensitive Groups 2 of 364 days2022: Good 308 of 362 days2022: Moderate 54 of 362 days20222023: Good 262 of 361 days2023: Moderate 94 of 361 days2023: Unhealthy for Sensitive Groups 3 of 361 days2023: Unhealthy 1 of 361 days2023: Very Unhealthy 1 of 361 days2024: Good 290 of 359 days2024: Moderate 68 of 359 days2024: Unhealthy for Sensitive Groups 1 of 359 days2025: Good 276 of 362 days2025: Moderate 83 of 362 days2025: Unhealthy for Sensitive Groups 3 of 362 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 1151983: 90th percentile AQI 1501984: 90th percentile AQI 1151985: 90th percentile AQI 1331986: 90th percentile AQI 1121987: 90th percentile AQI 1511988: 90th percentile AQI 1431989: 90th percentile AQI 1051990: 90th percentile AQI 1221991: 90th percentile AQI 1331992: 90th percentile AQI 741993: 90th percentile AQI 1471994: 90th percentile AQI 1011995: 90th percentile AQI 931996: 90th percentile AQI 841997: 90th percentile AQI 1001998: 90th percentile AQI 1121999: 90th percentile AQI 1082000: 90th percentile AQI 802001: 90th percentile AQI 1002002: 90th percentile AQI 1052003: 90th percentile AQI 842004: 90th percentile AQI 802005: 90th percentile AQI 802006: 90th percentile AQI 852007: 90th percentile AQI 902008: 90th percentile AQI 772009: 90th percentile AQI 712010: 90th percentile AQI 772011: 90th percentile AQI 672012: 90th percentile AQI 742013: 90th percentile AQI 492014: 90th percentile AQI 482015: 90th percentile AQI 542016: 90th percentile AQI 632017: 90th percentile AQI 582018: 90th percentile AQI 602019: 90th percentile AQI 612020: 90th percentile AQI 572021: 90th percentile AQI 552022: 90th percentile AQI 532023: 90th percentile AQI 612024: 90th percentile AQI 562025: 90th percentile AQI 591980: Median AQI 421983: Median AQI 381984: Median AQI 331985: Median AQI 411986: Median AQI 371987: Median AQI 391988: Median AQI 361989: Median AQI 321990: Median AQI 331991: Median AQI 351992: Median AQI 311993: Median AQI 361994: Median AQI 361995: Median AQI 341996: Median AQI 341997: Median AQI 361998: Median AQI 381999: Median AQI 362000: Median AQI 332001: Median AQI 382002: Median AQI 352003: Median AQI 362004: Median AQI 352005: Median AQI 352006: Median AQI 542007: Median AQI 512008: Median AQI 532009: Median AQI 522010: Median AQI 432011: Median AQI 432012: Median AQI 422013: Median AQI 342014: Median AQI 352015: Median AQI 332016: Median AQI 442017: Median AQI 422018: Median AQI 432019: Median AQI 442020: Median AQI 442021: Median AQI 392022: Median AQI 382023: Median AQI 432024: Median AQI 392025: Median AQI 401980198719921997200220072012201720222025
  • 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
Ozone21259%
Fine particles (PM2.5)15041%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
20253622768330004059123Ozone
20243592906810003956112Ozone
20233612629431104361203Ozone
2022362308540000385384Ozone
20213642917120003955112Ozone
20203652511140000445772PM2.5
201936125410430004461105Ozone
20183652411240000436093PM2.5
20173642541100000425884PM2.5
201636624512010004463136PM2.5
20153623174320003354108Ozone
20143643422110003548101Ozone
2013303285180000344990Ozone
201233822498133004274164Ozone
201135923212520004367122PM2.5
2010363236116110004377143Ozone
200936515920240005271129PM2.5
2008364160188160005377143PM2.5
2007360179159202005190156PM2.5
2006354137199162005485177PM2.5
200535629044192103580204Ozone
200436428763131003580159Ozone
200335827954222103684216Ozone
20023652715422162035105204Ozone
2001350263562092038100204Ozone
200036629650162203380208Ozone
19993362544422160036108200Ozone
19983652665728140038112190Ozone
19973602804721102036100208Ozone
199635528149214003484169Ozone
199536228353195203493210Ozone
1994352267473440036101172Ozone
19933432334533311036147201Ozone
199234729042104103174206Ozone
19913382394433184035133212Ozone
19903482653627155033122224Ozone
19893372534721115032105221Ozone
198835325343271812036143238Ozone
19873302293038258039151225Ozone
19863562625026162037112207Ozone
19853542405831241041133209Ozone
19843432643331150033115197Ozone
198332621753252110038150221Ozone
1980307215523181042115209Ozone

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 Jersey with a similar median AQI in 2025

All monitored counties in New Jersey

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