Median AQI
26
Good
Nevada · County air quality · 2025
Nye County, Nevada
Median AQI 26 (Good). 92.6% of monitored days rated Good, direct from EPA Air Quality System stations.
- 26
- Median AQI
- 92.6%
- Good-air days
- 1
- Unhealthy days
- 86%
- Cleaner than US counties
Nye County's 2025 annual median AQI is 26 (Good), with 92.6% Good days
According to the U.S. EPA Air Quality System, Nye County, Nevada posted a 2025 median AQI of 26 (Good) across 365 monitored days, with 92.6% rated Good and 1 unhealthy or worse. This is an annual comparison, not today's advisory.
Data source EPA Air Quality System (AQS)
- Cleaner than US
- Nye County's 92.6% Good-day share places it cleaner than 86% of US counties in 2025.
- Closest median-AQI peer
- Anchorage County (79.2% Good, median AQI 26) is the closest nationwide median-AQI peer to Nye County.
- 2020–2025 trend
- Nye County's floor-qualifying Good-day share is stable from 2020 to 2025 (93.7% → 92.6%).
- Median AQI
- Median AQI: 26
The verdict
According to EPA Air Quality System monitoring data, Nye County's air is good on balance, cleaner than most US counties, a median AQI of 26 with 92.6% of 365 monitored days in the Good band, driven mainly by PM10.
- 26
- median AQI · Good
- 92.6%
- days rated Good
- PM10
- main pollutant
- 86%
- cleaner than US counties
1 day reached Unhealthy or worse; the worst single reading hit AQI 153.
Annual release change
What changed in the 2025 EPA annual release
- Nye County's peak single-day AQI fell from 247 to 153 between the 2024 and 2025 EPA annual releases, a change of -94 points.
- Nye County's Good-day share rose from 87.2% to 92.6% between the 2024 and 2025 EPA annual releases, a change of +5.4 percentage points.
- Nye County's median AQI fell from 31 to 26 between the 2024 and 2025 EPA annual releases, a change of -5 points.
- Nye County's Unhealthy-category days rose from 0 to 1 between the 2024 and 2025 EPA annual releases, a change of +1 days.
Data updated August 2026
- Good · 338 d · 92.6%
- Moderate · 25 d · 6.8%
- USG · 1 d · 0.3%
- Unhealthy · 1 d · 0.3%
How did Nye County's air break down in 2025?
Across 365 monitored days, 338 fell in the Good band (AQI 0–50) and 1 reached Unhealthy or worse. The worst single day peaked at AQI 153 (Unhealthy).
EPA AQS →Air quality data from EPA Air Quality System (2025). 365 days monitored. Median AQI: 26 (Good).
Insights: Nye County, Nevada. EPA monitors recorded a median Air Quality Index of 26 across 365 measured days in 2025, earning a Good classification and a Excellent health grade. Of those days, 338 (93%) fell in the Good band (AQI 0–50), 25 (7%) registered Moderate readings, and 1 (0%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 45, while the worst single-day peak hit 153 (Unhealthy). Residents averaged about 27.8 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as PM10 (365 days). Across the 2020–2025 trend window, the share of monitored days rated Good shifted by -1.1 points and the median AQI moved +5 points, placing the multi-year trajectory at stable. The annual record contains 1 day at Unhealthy or worse. On that day, the EPA recommends that sensitive groups limit prolonged outdoor exertion. Nearby counties show comparable readings: Carson City (86.2% good, AQI 42); Churchill (85.2% good, AQI 40); Clark (31.0% good, AQI 61); Douglas (91.1% good, AQI 22); Elko (86.3% good, AQI 42); Lyon (90.0% good, AQI 41).
Air Quality Summary
Good Days
92.6%
338 of 365 monitored days
17.6pp vs 75% target
Max AQI Recorded
153
Unhealthy
Health Grade
Excellent
90th-pct AQI 45
Nye County, Good days share 92.6%
National avg
Share of monitored days at AQI 0-50 (Good band).
Nye County, Unhealthy-or-worse share 2.7%
National avg
Share of monitored days above AQI 150 (Unhealthy or worse). Bar maxes at 10% (worst-county ceiling).
AQI Day Breakdown (2025)
Distribution of 365 monitored days across EPA AQI categories.
Good
338
93%
Moderate
25
7%
USG
1
0%
Unhealthy
1
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Pollutant Breakdown
Days where each pollutant was the primary driver of AQI readings in Nye County.
- PM10 · 365 days · 100.0%
Health Impact Assessment
Excellent
Nye County's air quality is rated Excellent based on 92.6% good air days. There were 1 unhealthy days in 2025 when outdoor activity should be limited.
Air quality is acceptable most days, but 1 days reached "Unhealthy for Sensitive Groups" (AQI 101-150) and peak AQI reached 153. Sensitive groups should monitor real-time conditions at AirNow.gov.
The dominant pollutant is PM10, driving AQI on 365 of 365 monitored days.
5-Year Air Quality Trend
Air quality is stable in Nye County. Highest Good-day share: 2020 (93.7%, 343 of 366 monitored days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 343 | 20 | 1 | 2 | 21 | 200 |
| 2021 | 336 | 28 | 1 | 0 | 23 | 105 |
| 2022 | 306 | 41 | 6 | 4 | 22 | 294 |
| 2023 | 339 | 20 | 6 | 0 | 19 | 147 |
| 2024 | 319 | 44 | 2 | 0 | 31 | 247 |
| 2025 | 338 | 25 | 1 | 1 | 26 | 153 |
How does Nye County compare?
How Nye County compares
Good-day share better than typical
Nye County 92.6%
Anchorage County, Alaska 79.2%
Typical US county 76.0%
Median AQI better than typical
Nye County 26
Anchorage County, Alaska 26
Typical US county 39
Unhealthy days / yr about typical
Nye County 1
Anchorage County, Alaska 0
Typical US county 1
Counties with a similar median AQI
Nationwide peers within about the same annual median AQI as Nye County (26), not geographic neighbors.
Anchorage County, Alaska
Median AQI 26 · 79.2% Good-day share
Lake County, Oregon
Median AQI 26 · 80.5% Good-day share
Twin Falls County, Idaho
Median AQI 26 · 92.9% Good-day share
Wallowa County, Oregon
Median AQI 26 · 85.2% Good-day share
Alamosa County, Colorado
Median AQI 25 · 91.5% Good-day share
Brown County, South Dakota
Median AQI 27 · 83.6% Good-day share
Same primary pollutant: PM10
PM10 led the AQI on the most monitored days here. These peers share that driver and the closest Good-day share (a second relationship type beyond median-AQI neighbors).
Platte County, Wyoming
90.6% Good-day share · median AQI 15
Mohave County, Arizona
94.8% Good-day share · median AQI 17
Putnam County, Florida
95.6% Good-day share · median AQI 21
Cass County, Nebraska
95.9% Good-day share · median AQI 19
Lincoln County, Wyoming
98.9% Good-day share · median AQI 10
Navajo County, Arizona
99.5% Good-day share · median AQI 13
Nevada counties on the map
Geographic containment only, other monitored counties in Nevada, independent of AQI or pollutant match.
What Nye County's air means for you
On most days the air here is fine, but PM10 drives 1 unhealthy-or-worse day a year that sensitive groups should plan around.
- Sensitive groups (asthma, heart conditions, children, older adults) should check the AQI on high-PM10 days, the guide explains what a median of 26 means for exposure. Health guidance
- See how Nye County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Nye County with its Nevada neighbours before drawing a conclusion about the region. All of Nevada
Based on 365 EPA-monitored days in 2025; figures reflect only days the monitors reported. Source: EPA Air Quality System annual summaries.
Keep exploring the annual AQI record
Air-quality reading list
Frequently Asked Questions
What is the air quality in Nye County, Nevada? ▼
Nye County has a median Air Quality Index (AQI) of 26, rated "Good." 92.6% of monitored days (338 out of 365) had good air quality in 2025.
What is the main pollutant in Nye County? ▼
The primary pollutant in Nye County is Coarse Particles (PM10), which was the main AQI driver on 365 days (100% of monitored days). Irritates airways and can aggravate asthma and bronchitis.
How many unhealthy air days does Nye County have? ▼
In 2025, Nye County recorded 1 unhealthy air days (1 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 153.
Is the air quality in Nye County getting better or worse? ▼
Air quality in Nye County is stable across floor-qualifying years (2020-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2020 at 93.7% (343 of 366 days). Lowest qualifying Good-day share: 2022 at 85.7% (306 of 358 days).
What does AQI 26 mean for health? ▼
Nye County's median AQI of 26 falls in the "Good" category. See the AQI category guide for what each range means for health.
How does Nye County compare to other counties in Nevada? ▼
Nye County has 92.6% good air days. Nearby counties in Nevada: Carson City (86.2% good), Churchill (85.2% good), Clark (31.0% good), Douglas (91.1% good), Elko (86.3% good), Lyon (90.0% good).
What is the 90th percentile AQI in Nye County? ▼
The 90th percentile AQI for Nye County is 45, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 153 (Unhealthy).
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by County dataset, 2020–2025 (aqs.epa.gov). For current conditions (not shown here — this page is historical annual data), see EPA AirNow (airnow.gov). See our methodology for how AQI, median, and coverage figures are computed.
Informational only, not professional advice. Data from EPA AQS. See our disclaimer. Spotted a figure that looks wrong? Report a correction.
Source: U.S. EPA Air Quality System (AQS) Annual AQI by county summary files for Nye County, Nevada · 2020–2025
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Every figure on PlainAirData is rendered directly from EPA AQS air-quality monitoring data, no number is typed in by an editor. This page draws directly on EPA AQS air-quality monitoring data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.