EnviroNearby

Nye County, Nevada air quality history

Daily Air Quality Index summaries from EPA monitors in Nye, Nevada, 2003–2025.

93%
Good days in 2025
26
Median daily AQI, 2025
2
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 Nye, Nevada on 365 days. 338 of those days (93%) were in the Good range, and the median daily AQI was 26. That median is lower than the typical monitored county in Nevada (median 42 across 9 counties), and lower than the typical monitored U.S. county (40). The main pollutant was coarse particles (PM10) on 365 days. Across the years with fuller monitoring, the share of Good days rose: an average of 87% in 2004–2006 versus 91% in 2023–2025.

Years with fewer than 120 monitored days (2003) 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%2003: Good 108 of 116 days2003: Moderate 5 of 116 days2003: Unhealthy for Sensitive Groups 2 of 116 days2003: Very Unhealthy 1 of 116 days20032004: Good 302 of 366 days2004: Moderate 60 of 366 days2004: Unhealthy for Sensitive Groups 4 of 366 days2005: Good 334 of 362 days2005: Moderate 28 of 362 days20052006: Good 314 of 365 days2006: Moderate 48 of 365 days2006: Unhealthy for Sensitive Groups 1 of 365 days2006: Unhealthy 1 of 365 days2006: Hazardous 1 of 365 days2007: Good 321 of 365 days2007: Moderate 39 of 365 days2007: Unhealthy for Sensitive Groups 3 of 365 days2007: Unhealthy 2 of 365 days20072008: Good 340 of 359 days2008: Moderate 17 of 359 days2008: Unhealthy for Sensitive Groups 2 of 359 days2009: Good 328 of 352 days2009: Moderate 19 of 352 days2009: Unhealthy for Sensitive Groups 4 of 352 days2009: Unhealthy 1 of 352 days20092010: Good 332 of 362 days2010: Moderate 30 of 362 days2011: Good 346 of 365 days2011: Moderate 18 of 365 days2011: Unhealthy for Sensitive Groups 1 of 365 days20112012: Good 341 of 366 days2012: Moderate 24 of 366 days2012: Unhealthy for Sensitive Groups 1 of 366 days2013: Good 352 of 365 days2013: Moderate 12 of 365 days2013: Unhealthy for Sensitive Groups 1 of 365 days20132014: Good 339 of 365 days2014: Moderate 24 of 365 days2014: Unhealthy for Sensitive Groups 2 of 365 days2015: Good 357 of 365 days2015: Moderate 7 of 365 days2015: Unhealthy 1 of 365 days20152016: Good 349 of 366 days2016: Moderate 15 of 366 days2016: Unhealthy for Sensitive Groups 1 of 366 days2016: Hazardous 1 of 366 days2017: Good 346 of 365 days2017: Moderate 15 of 365 days2017: Unhealthy for Sensitive Groups 3 of 365 days2017: Unhealthy 1 of 365 days20172018: Good 350 of 365 days2018: Moderate 15 of 365 days2019: Good 352 of 365 days2019: Moderate 12 of 365 days2019: Unhealthy for Sensitive Groups 1 of 365 days20192020: Good 343 of 366 days2020: Moderate 20 of 366 days2020: Unhealthy for Sensitive Groups 1 of 366 days2020: Unhealthy 2 of 366 days2021: Good 336 of 365 days2021: Moderate 28 of 365 days2021: Unhealthy for Sensitive Groups 1 of 365 days20212022: Good 306 of 358 days2022: Moderate 41 of 358 days2022: Unhealthy for Sensitive Groups 6 of 358 days2022: Unhealthy 4 of 358 days2022: Very Unhealthy 1 of 358 days2023: Good 339 of 365 days2023: Moderate 20 of 365 days2023: Unhealthy for Sensitive Groups 6 of 365 days20232024: Good 319 of 366 days2024: Moderate 44 of 366 days2024: Unhealthy for Sensitive Groups 2 of 366 days2024: Very Unhealthy 1 of 366 days2025: Good 338 of 365 days2025: Moderate 25 of 365 days2025: Unhealthy for Sensitive Groups 1 of 365 days2025: 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 year0501002003: 90th percentile AQI 462004: 90th percentile AQI 562005: 90th percentile AQI 472006: 90th percentile AQI 532007: 90th percentile AQI 532008: 90th percentile AQI 412009: 90th percentile AQI 422010: 90th percentile AQI 462011: 90th percentile AQI 322012: 90th percentile AQI 392013: 90th percentile AQI 342014: 90th percentile AQI 442015: 90th percentile AQI 302016: 90th percentile AQI 352017: 90th percentile AQI 372018: 90th percentile AQI 322019: 90th percentile AQI 312020: 90th percentile AQI 402021: 90th percentile AQI 442022: 90th percentile AQI 572023: 90th percentile AQI 412024: 90th percentile AQI 522025: 90th percentile AQI 452003: Median AQI 222004: Median AQI 322005: Median AQI 232006: Median AQI 312007: Median AQI 302008: Median AQI 212009: Median AQI 262010: Median AQI 272011: Median AQI 202012: Median AQI 192013: Median AQI 182014: Median AQI 202015: Median AQI 162016: Median AQI 152017: Median AQI 192018: Median AQI 182019: Median AQI 152020: Median AQI 212021: Median AQI 232022: Median AQI 222023: Median AQI 192024: Median AQI 312025: Median AQI 26200320052007200920112013201520172019202120232025
  • 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
Coarse particles (PM10)365100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
20253653382511002645153PM10
20243663194420103152247PM10
20233653392060001941147PM10
20223583064164102257294PM10
20213653362810002344105PM10
20203663432012002140200PM10
20193653521210001531146PM10
2018365350150000183299PM10
20173653461531001937167PM10
20163663491510011535343PM10
2015365357701001630165PM10
20143653392420002044143PM10
20133653521210001834133PM10
20123663412410001939107PM10
20113653461810002032120PM10
2010362332300000274682PM10
20093523281941002642165PM10
20083593401720002141135PM10
20073653213932003053200PM10
20063653144811013153450PM10
2005362334280000234779PM10
20043663026040003256149PM10
2003116108520102246208PM10

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 Nevada with a similar median AQI in 2025

All monitored counties in Nevada

Source: U.S. EPA AirData, “Annual AQI by County” files for 2003–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem