Pinal, Arizona Air Quality
Pinal County, Arizona (AZ)
↓ Improvingover 10 years
10-Year AQI Trend
The solid line shows the median AQI each year. The dashed line shows the 90th percentile (worst 10% of days). This area has seen measurable air quality improvement over the decade.
Air Quality Day Breakdown
Number of days per year in each EPA AQI category. Green = Good (AQI 0-50), Yellow = Moderate (51-100), Orange = Unhealthy for Sensitive Groups (101-150), Red = Unhealthy or worse (151+).
Year-by-Year Data
| Year | Median AQI | 90th Pct | Max AQI | Good Days | Moderate | Unhealthy+ | Pollutant |
|---|---|---|---|---|---|---|---|
| 2023 | 64 | 105 | 709 | 109 | 211 | 45 | PM10 |
| 2022 | 61 | 100 | 689 | 91 | 238 | 36 | PM10 |
| 2021 | 70 | 108 | 198 | 72 | 240 | 53 | PM10 |
| 2020 | 73 | 121 | 1194 | 86 | 196 | 84 | PM10 |
| 2019 | 63 | 100 | 929 | 104 | 228 | 33 | PM10 |
| 2018 | 67 | 108 | 1051 | 71 | 243 | 51 | PM10 |
| 2017 | 75 | 115 | 358 | 55 | 242 | 68 | PM10 |
| 2016 | 69 | 108 | 1348 | 57 | 256 | 53 | PM10 |
| 2015 | 63 | 108 | 924 | 86 | 233 | 46 | PM10 |
| 2014 | 72 | 142 | 924 | 51 | 227 | 87 | PM10 |
What This Means for Pinal County Residents
Pinal, Arizona has received an Air Quality Grade of D (40/100) based on a decade of EPA monitoring data. The current median AQI of 64 falls in the "Moderate" range.
Encouragingly, air quality here has been improving, with the median AQI dropping by 8 points over the monitoring period. This trend suggests continued investment in emission controls and cleaner energy.
The primary pollutant affecting this area is Coarse Particulate Matter (PM10). Over the past 5 years, this area has averaged 50 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.