SONORA, Country Of Mexico Air Quality
SONORA County, Country Of Mexico (MX)
↑ Worseningover 7 years
How SONORA, Country Of Mexico Air Quality Compares
SONORA, Country Of Mexico's median AQI of 53is 29% worse than the national average of 41. Air quality has worsened by 16 AQI points over the past decade. The area averages 5 unhealthy air days per year. The primary pollutant of concern is Ground-Level Ozone.
SONORA, Country Of Mexico Air Quality: The Full Picture
SONORA, Country Of Mexico (SONORA County) holds an AirHistory Air Quality Grade of D (poor, scoring 47 out of 100), built from 7 years of EPA Air Quality System monitoring. Its median AQI rose 16 points between 2017 (37) and 2023 (53), and the five-year median now sits at 44 — inside the "Good" band on the EPA scale.
The pollutant driving most of the area's AQI readings is Ground-Level Ozone. In 2023, it set the daily AQI on 115 of 364 monitored days (32% of the year), making it the controlling pollutant for the D grade. The single worst reading logged that year hit an AQI of 155 (Unhealthy), while the 90th-percentile day — the level the dirtiest 10% of days reach — came in at 80.
In 2023, SONORA County recorded 151 "Good" air days (41% of the 364 days with valid AQI data), 202 "Moderate" days, and 11 days at "Unhealthy for Sensitive Groups" or above. Over the most recent five years on record, monitors logged 23 days that crossed into "Unhealthy for Sensitive Groups" or worse — about 5 per year.
The decade-long trend is worsening: median AQI has been climbing by roughly 2.32 points per year. The cleanest year in the record was 2021 (median AQI 34), and the most polluted was 2023 (median AQI 53). Because the data come straight from federally certified EPA monitors, these figures track the Country Of Mexico county the monitors physically sit in rather than a city boundary.
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10-Year AQI Trend
The solid line shows the median AQI each year. The dashed line shows the 90th percentile (worst 10% of days). Air quality in this area has been declining over the past 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 | 53 | 80 | 155 | 151 | 202 | 11 | PM2.5 |
| 2022 | 51 | 80 | 115 | 180 | 179 | 6 | Ozone |
| 2021 | 34 | 47 | 61 | 100 | 5 | 0 | Ozone |
| 2020 | 41 | 64 | 101 | 125 | 20 | 1 | Ozone |
| 2019 | 43 | 61 | 126 | 288 | 65 | 5 | Ozone |
| 2018 | 38 | 51 | 119 | 317 | 42 | 3 | Ozone |
| 2017 | 37 | 51 | 143 | 184 | 20 | 5 | Ozone |
What This Means for SONORA County Residents
SONORA, Country Of Mexico has received an Air Quality Grade of D (47/100) based on a decade of monitoring data from the EPA's air quality monitoring program. The current median AQI of 53 falls in the "Moderate" range.
Concerning trends show air quality has been declining, with the median AQI rising by 16 points over the monitoring period. This could be driven by increased development, wildfire smoke, or industrial activity.
The primary pollutant affecting this area is Ground-Level Ozone. Over the past 5 years, this area has averaged 5 unhealthy air quality days per year, days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity. The American Lung Association's State of the Air report provides additional context on long-term health risks from air pollution exposure.
Related Cities in Country Of Mexico
Frequently Asked Questions
SONORA, Country Of Mexico has a current median AQI of 53, which falls in the "Moderate" range. The area has received an Air Quality Grade of D (47/100) based on 10 years of EPA monitoring data.
Air quality in SONORA, Country Of Mexico is worsening over the past decade. The median AQI has changed by +16 points from 2017 to 2023.
SONORA, Country Of Mexico averages 5 unhealthy air quality days per year over the past 5 years. On these days, sensitive groups including children, the elderly, and those with respiratory conditions should limit outdoor activity.
The primary pollutant affecting SONORA, Country Of Mexico is Ground-Level Ozone. This is the dominant contributor to elevated AQI readings in the SONORA County area.
SONORA, Country Of Mexico averages 5 unhealthy air days per year. This is relatively low, making it a reasonable choice for asthma sufferers. The primary pollutant is Ground-Level Ozone, which is a known asthma trigger.
With a median AQI of 53 (Moderate), outdoor exercise in SONORA, Country Of Mexico is safe most days, though sensitive individuals should check daily AQI before intense workouts. SONORA, Country Of Mexico averages 5 days per year when athletes should move workouts indoors.