BAJA CALIFORNIA NORTE, Country Of Mexico Air Quality
BAJA CALIFORNIA NORTE County, Country Of Mexico (MX)
↑ Worseningover 9 years
How BAJA CALIFORNIA NORTE, Country Of Mexico Air Quality Compares
BAJA CALIFORNIA NORTE, Country Of Mexico's median AQI of 66is 61% worse than the national average of 41. Residents experience an average of 44 unhealthy air days per year, above the national threshold for concern. The primary pollutant of concern is Fine Particulate Matter (PM2.5).
BAJA CALIFORNIA NORTE, Country Of Mexico Air Quality: The Full Picture
BAJA CALIFORNIA NORTE, Country Of Mexico (BAJA CALIFORNIA NORTE County) holds an AirHistory Air Quality Grade of F (very poor, scoring 16 out of 100), built from 9 years of EPA Air Quality System monitoring. Its median AQI rose 1 points between 2014 (65) and 2022 (66), and the five-year median now sits at 81 — inside the "Moderate" band on the EPA scale.
The pollutant driving most of the area's AQI readings is Fine Particulate Matter (PM2.5). In 2022, it set the daily AQI on 273 of 273 monitored days (100% of the year), making it the controlling pollutant for the F grade. The single worst reading logged that year hit an AQI of 172 (Unhealthy), while the 90th-percentile day — the level the dirtiest 10% of days reach — came in at 125.
In 2022, BAJA CALIFORNIA NORTE County recorded 29 "Good" air days (11% of the 273 days with valid AQI data), 198 "Moderate" days, and 46 days at "Unhealthy for Sensitive Groups" or above. Over the most recent five years on record, monitors logged 175 days that crossed into "Unhealthy for Sensitive Groups" or worse — about 35 per year.
The decade-long trend is worsening: median AQI has been climbing by roughly 1.55 points per year. The cleanest year in the record was 2014 (median AQI 65), and the most polluted was 2020 (median AQI 115). 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 |
|---|---|---|---|---|---|---|---|
| 2022 | 66 | 125 | 172 | 29 | 198 | 46 | PM2.5 |
| 2021 | 69 | 134 | 187 | 14 | 285 | 66 | PM2.5 |
| 2020 | 115 | 158 | 185 | 0 | 37 | 55 | PM2.5 |
| 2019 | 72 | 117 | 144 | 5 | 19 | 8 | PM10 |
| 2018 | 76 | 139 | 487 | 11 | 102 | 39 | PM2.5 |
| 2017 | 67 | 134 | 598 | 44 | 246 | 71 | PM2.5 |
| 2016 | 67 | 126 | 194 | 22 | 200 | 54 | PM2.5 |
| 2015 | 73 | 141 | 174 | 8 | 34 | 14 | PM10 |
| 2014 | 65 | 143 | 187 | 11 | 27 | 13 | PM10 |
What This Means for BAJA CALIFORNIA NORTE County Residents
BAJA CALIFORNIA NORTE, Country Of Mexico has received an Air Quality Grade of F (16/100) based on a decade of monitoring data from the EPA's air quality monitoring program. The current median AQI of 66 falls in the "Moderate" range.
Concerning trends show air quality has been declining, with the median AQI rising by 1 points over the monitoring period. This could be driven by increased development, wildfire smoke, or industrial activity.
The primary pollutant affecting this area is Fine Particulate Matter (PM2.5). Over the past 5 years, this area has averaged 44 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
BAJA CALIFORNIA NORTE, Country Of Mexico has a current median AQI of 66, which falls in the "Moderate" range. The area has received an Air Quality Grade of F (16/100) based on 10 years of EPA monitoring data.
Air quality in BAJA CALIFORNIA NORTE, Country Of Mexico is worsening over the past decade. The median AQI has changed by +1 points from 2014 to 2022.
BAJA CALIFORNIA NORTE, Country Of Mexico averages 44 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 BAJA CALIFORNIA NORTE, Country Of Mexico is Fine Particulate Matter (PM2.5). This is the dominant contributor to elevated AQI readings in the BAJA CALIFORNIA NORTE County area.
BAJA CALIFORNIA NORTE, Country Of Mexico averages 44 unhealthy air days per year. With frequent unhealthy air days, asthma patients should use a HEPA air purifier indoors and check AQI before any outdoor activity. The primary pollutant is Fine Particulate Matter (PM2.5), which is a known asthma trigger.
With a median AQI of 66 (Moderate), outdoor exercise in BAJA CALIFORNIA NORTE, Country Of Mexico is safe most days, though sensitive individuals should check daily AQI before intense workouts. BAJA CALIFORNIA NORTE, Country Of Mexico averages 44 days per year when athletes should move workouts indoors.