Median AQI
49
Good
Arizona · County air quality · 2025
Yavapai County, Arizona
Median AQI 49 (Good). 58.7% of monitored days rated Good, direct from EPA Air Quality System stations.
- 49
- Median AQI
- 58.7%
- Good-air days
- 0
- Unhealthy days
- 13%
- Cleaner than US counties
The verdict
According to EPA Air Quality System monitoring data, Yavapai County's air is good on balance, among the more polluted 10% of US counties, a median AQI of 49 with 58.7% of 269 monitored days in the Good band, driven mainly by Ozone.
- 49
- median AQI · Good
- 58.7%
- days rated Good
- Ozone
- main pollutant
- 13%
- cleaner than US counties
Not one day crossed into the Unhealthy tier; the worst single reading was AQI 97.
Data updated July 2026
- Good · 158 d · 58.7%
- Moderate · 111 d · 41.3%
How did Yavapai County's air break down in 2025?
Across 269 monitored days, 158 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 97 (Moderate).
EPA AQS →Air quality data from EPA Air Quality System (2025). 269 days monitored. Median AQI: 49 (Good).
Insights: Yavapai County, Arizona. EPA monitors recorded a median Air Quality Index of 49 across 269 measured days in 2025, earning a Good classification and a Moderate health grade. Of those days, 158 (59%) fell in the Good band (AQI 0–50), 111 (41%) registered Moderate readings, and 0 (0%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 74, while the worst single-day peak hit 97 (Moderate). Residents averaged about 17.6 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as Ozone (268 days), PM2.5 (1 days). Across the 2020–2025 trend window, good days shifted by -107 and the median AQI moved +4 points, placing the multi-year trajectory at worsening. The worst single reading over the 2020–2025 window was AQI 97, moderate but never Unhealthy. Nearby counties show comparable readings: Apache (99.6% good, AQI 14); Cochise (65.6% good, AQI 46); Coconino (62.5% good, AQI 48); Gila (52.0% good, AQI 50); La Paz (68.6% good, AQI 47); Maricopa (16.4% good, AQI 71).
Air Quality Summary
Good Days
58.7%
158 of 269 monitored days
-16.3pp vs 75% target
Max AQI Recorded
97
Moderate
Health Grade
Moderate
90th-pct AQI 74
Yavapai County, Good days share 58.7%
National avg
Share of monitored days at AQI 0-50 (Good band).
Yavapai County, Unhealthy-or-worse share 0.0%
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 269 monitored days across EPA AQI categories.
Good
158
59%
Moderate
111
41%
USG
0
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Pollutant Breakdown
Days where each pollutant was the primary driver of AQI readings in Yavapai County.
- Ozone · 268 days · 99.6%
- PM2.5 · 1 days · 0.4%
Health Impact Assessment
Moderate
Yavapai County's air quality is rated Moderate based on 58.7% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 58.7% of monitored days in 2025, with a median AQI of 49. Unusually sensitive people can check real-time conditions at AirNow.gov during high-pollution events.
The dominant pollutant is Ozone, driving AQI on 268 of 269 monitored days.
5-Year Air Quality Trend
Air quality is worsening in Yavapai County. Best year: 2022 (341 good days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 265 | 65 | 1 | 0 | 45 | 119 |
| 2021 | 302 | 29 | 0 | 0 | 44 | 64 |
| 2022 | 341 | 24 | 0 | 0 | 40 | 87 |
| 2023 | 298 | 66 | 0 | 0 | 43 | 87 |
| 2024 | 225 | 139 | 2 | 0 | 47 | 115 |
| 2025 | 158 | 111 | 0 | 0 | 49 | 97 |
How does Yavapai County compare?
How Yavapai County compares
Good-day share worse than US avg
Yavapai County 58.7%
Apache County, Arizona 99.6%
US average 76.5%
Median AQI worse than US avg
Yavapai County 49
Apache County, Arizona 14
US average 38
Unhealthy days / yr about average
Yavapai County 0
Apache County, Arizona 0
US average 0
Other Counties in Arizona
Air quality comparison for nearby counties in Arizona.
Counties with Similar Air Quality
Counties across the US with a similar median AQI to Yavapai County.
Allegheny County, Pennsylvania
AQI 49 · 51.6% good
Arkansas County, Arkansas
AQI 49 · 51.6% good
Ashley County, Arkansas
AQI 49 · 53.9% good
Clayton County, Georgia
AQI 49 · 53.1% good
Cleveland County, Oklahoma
AQI 49 · 53.7% good
Dewey County, Oklahoma
AQI 49 · 56.6% good
What Yavapai County's air means for you
The air here stays in the breathable range year-round, with Ozone the main thing to watch.
- Sensitive groups (asthma, heart conditions, children, older adults) should check the AQI on high-Ozone days, the guide explains what a median of 49 means for exposure. Health guidance
- See how Yavapai County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Yavapai County with its Arizona neighbours before drawing a conclusion about the region. All of Arizona
Based on 269 EPA-monitored days in 2025; figures reflect only days the monitors reported. Source: EPA Air Quality System annual summaries.
More Air Quality Data
Air Quality Guides
Frequently Asked Questions
What is the air quality in Yavapai County, Arizona? ▼
Yavapai County has a median Air Quality Index (AQI) of 49, rated "Good." 58.7% of monitored days (158 out of 269) had good air quality in 2025.
What is the main pollutant in Yavapai County? ▼
The primary pollutant in Yavapai County is Ozone (O3), which was the main AQI driver on 268 days (100% of monitored days). Can trigger asthma, reduce lung function, and cause chest pain.
How many unhealthy air days does Yavapai County have? ▼
In 2025, Yavapai County recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 97.
Is the air quality in Yavapai County getting better or worse? ▼
Air quality in Yavapai County is worsening based on 5-year trends (2020-2025). Best year: 2022 with 341 good days. Worst year: 2025 with 158 good days.
What does AQI 49 mean for health? ▼
Yavapai County's median AQI of 49 falls in the "Good" category. See the <a href="/guides/understanding-aqi" class="underline">AQI category guide</a> for what each range means for health.
How does Yavapai County compare to other counties in Arizona? ▼
Yavapai County has 58.7% good air days. Nearby counties in Arizona: Apache (99.6% good), Cochise (65.6% good), Coconino (62.5% good), Gila (52.0% good), La Paz (68.6% good), Maricopa (16.4% good).
What is the 90th percentile AQI in Yavapai County? ▼
The 90th percentile AQI for Yavapai County is 74, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 97 (Moderate).
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.
Every figure on PlainAir 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.