Bad Air Days in Adjuntas, Puerto Rico
Not enough data
EPA monitors in Adjuntas ran on too few days between 2016 and 2025 to give a fair yearly count (about 16% of days covered). Neighbouring counties below are a better guide.
Is a purifier worth it here?
- EPA monitors here ran too few days to give a fair yearly count. Use AirNow for today's air.
Better or worse than it was
| Date | AQI | Main pollutant |
|---|---|---|
| 2017-05-25 | 90 | PM2.5 |
| 2017-05-16 | 81 | PM2.5 |
| 2017-05-22 | 80 | PM2.5 |
| 2016-04-24 | 75 | PM2.5 |
| 2019-08-16 | 70 | PM2.5 |
An ordinary day in Adjuntas
Across 352 monitored days from 2016 to 2021, the air in Adjuntas rated Good on 86% of them, more often than the 72% typical of monitored counties, and Moderate on 14%. The median day sat at AQI 25; one day in ten went above 52.
The pollutant setting the AQI on an ordinary day here:
- fine particles (PM2.5)100%352 days
Every recent year on file
| Year | Days monitored | Good | Moderate | Over 100 | Over 150 | Median AQI | Highest AQI |
|---|---|---|---|---|---|---|---|
| 2021 | 7 | 7 | 0 | 0 | 0 | 14 | 23 |
| 2020 | 57 | 52 | 5 | 0 | 0 | 18 | 63 |
| 2019 | 117 | 98 | 19 | 0 | 0 | 24 | 70 |
| 2018 | 27 | 27 | 0 | 0 | 0 | 19 | 42 |
| 2017 | 47 | 35 | 12 | 0 | 0 | 37 | 90 |
| 2016 | 97 | 85 | 12 | 0 | 0 | 28 | 75 |
| 2015 | 91 | 80 | 11 | 0 | 0 | 27 | 64 |
| 2014 | 42 | 36 | 6 | 0 | 0 | 24 | 61 |
| 2013 | 93 | 85 | 8 | 0 | 0 | 22 | 59 |
| 2012 | 77 | 72 | 5 | 0 | 0 | 24 | 70 |
| 2011 | 14 | 13 | 1 | 0 | 0 | 14 | 58 |
Elsewhere in Puerto Rico
How this is counted
A bad air day is a day the county's daily AQI from EPA AirData went above 100, the level where EPA tells children, older adults and people with asthma or heart disease to cut back outdoors. Monitors do not run every day, so yearly counts are scaled to 365 days. This is the record, not today's air: for that, check AirNow. More on the method in how the county numbers are made, on the AQI 100 line in what counts as a bad air day.