Pisinemo, Arizona Air Quality
Pisinemo has a median AQI of 55, earning an air quality grade of B — good air quality that ranks better than 4% of US cities. Air quality has been trending worse over the past decade, a concern for local residents and health officials. Particulate matter (PM10) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2025, Pisinemo recorded 101 good air quality days (37% of monitored days) and 5 unhealthy days.
Population: 311 • County: Pima
Current AQI
Quick Facts
| Current AQI | 13 — Good |
| Air Quality Grade | B |
| Median AQI (2025) | 55 |
| vs. U.S. Cities | Better than 4% |
| Primary Pollutant | PM10 |
| Unhealthy Days/Year | 5 |
| 10-Year Trend | ↓ Worsening |
| Data Source | EPA AQS (historical) · AirNow (live) |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Pisinemo is sourced from the Ajo monitoring area, located approximately 40 miles from city center. This EPA-certified station continuously tracks particulate matter (PM10), the primary driver of air quality alerts in this area.
Pisinemo typically sees its worst air quality during summer afternoons when heat and sunlight drive ground-level ozone formation from vehicle and industrial emissions. Morning readings are generally 15–25 points lower than afternoon peaks. Outdoor activity is best planned for early morning on high-ozone days.
AQI Trend (10 Years)
Air Quality Days by Year
Pisinemo Median AQI by Year
Annual EPA air quality data for Pisinemo — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 55 | 101 | 7 | 357 | PM10 |
| 2024 | 56 | 113 | 12 | 171 | Ozone |
| 2023 | 54 | 123 | 7 | 147 | Ozone |
| 2022 | 53 | 147 | 13 | 142 | Ozone |
| 2021 | 56 | 93 | 14 | 313 | Ozone |
| 2020 | 55 | 124 | 13 | 277 | Ozone |
| 2019 | 49 | 207 | 2 | 103 | Ozone |
| 2018 | 52 | 164 | 11 | 129 | Ozone |
| 2017 | 54 | 121 | 7 | 122 | Ozone |
| 2016 | 50 | 191 | 4 | 119 | Ozone |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Pisinemo Air Quality
What is the air quality in Pisinemo today?
The current AQI in Pisinemo is 13, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Pisinemo getting better or worse?
Air quality in Pisinemo has been worsening. The median AQI has risen 5 points (from 50 in 2016 to 55 in 2025), a concern for local health officials.
What is the most common air pollutant in Pisinemo?
PM10 is the primary air pollutant in Pisinemo, responsible for 127 days (47% of monitored days) in 2025. Particulate matter originates from vehicle exhaust, wildfires, construction, and industrial activity.
How many unhealthy air days does Pisinemo have per year?
In 2025, Pisinemo recorded 37% good air quality days (101 days) out of 273 monitored days. There were 2 Unhealthy for Sensitive Groups days and 3 Unhealthy days (AQI above 100). The most severe category (Very Unhealthy or Hazardous) occurred on 2 days. The highest single-day AQI recorded was 357.
What air quality grade does Pisinemo receive?
Pisinemo receives an air quality grade of B, placing it better than 4% of US cities. This is based on a median AQI of 55 in 2025, with 101 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 4% of US cities
Nearby Cities
Protect Your Health
With a median AQI of 55, indoor air purification is recommended
See Recommended Purifiers ↓Get AQI Alerts
Receive notifications when air quality changes in Pisinemo
National Rankings
See how Pisinemo compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Pisinemo
Pisinemo's primary pollutant is PM10 (coarse dust and pollen). Units with a washable pre-filter stage plus True HEPA handle the larger particles that drive most of this area's air quality days.
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