Air Quality in San Juan, Colorado
9
Median AQI (2024)
51
Max AQI (2024)
→ stable
10-Year Trend
PM2.5
Primary Pollutant
120
Good Days (2024)
1
Monitoring Stations
AQI Trend (Median)
Air Quality Days by Category
Annual Summary
| Year | Median AQI | Max AQI | Good Days | Moderate Days | Unhealthy Days | Ozone Days | PM2.5 Days |
|---|---|---|---|---|---|---|---|
| 2024 | 9 | 51 | 120 | 1 | 0 | 0 | 121 |
| 2023 | 9 | 50 | 120 | 0 | 0 | 0 | 120 |
| 2022 | 10 | 75 | 115 | 4 | 0 | 0 | 119 |
| 2021 | 9 | 79 | 114 | 5 | 0 | 0 | 119 |
| 2020 | 9 | 73 | 115 | 4 | 0 | 0 | 119 |
| 2019 | 9 | 32 | 116 | 0 | 0 | 0 | 116 |
| 2018 | 10 | 100 | 109 | 9 | 0 | 0 | 118 |
| 2017 | 9 | 49 | 119 | 0 | 0 | 0 | 119 |
| 2016 | 8 | 31 | 121 | 0 | 0 | 0 | 121 |
| 2015 | 8 | 55 | 120 | 1 | 0 | 0 | 121 |
Recent Daily AQI
| Date | AQI | Category | Primary Pollutant |
|---|---|---|---|
| Dec 29, 2024 | 3 | Good | PM2.5 |
| Dec 26, 2024 | 4 | Good | PM2.5 |
| Dec 23, 2024 | 6 | Good | PM2.5 |
| Dec 20, 2024 | 4 | Good | PM2.5 |
| Dec 17, 2024 | 5 | Good | PM2.5 |
| Dec 14, 2024 | 2 | Good | PM2.5 |
| Dec 11, 2024 | 4 | Good | PM2.5 |
| Dec 8, 2024 | 3 | Good | PM2.5 |
| Dec 5, 2024 | 6 | Good | PM2.5 |
| Dec 2, 2024 | 3 | Good | PM2.5 |
| Nov 29, 2024 | 3 | Good | PM2.5 |
| Nov 26, 2024 | 3 | Good | PM2.5 |
| Nov 23, 2024 | 8 | Good | PM2.5 |
| Nov 20, 2024 | 8 | Good | PM2.5 |
| Nov 17, 2024 | 6 | Good | PM2.5 |
| Nov 14, 2024 | 3 | Good | PM2.5 |
| Nov 11, 2024 | 3 | Good | PM2.5 |
| Nov 8, 2024 | 2 | Good | PM2.5 |
| Nov 5, 2024 | 3 | Good | PM2.5 |
| Nov 2, 2024 | 10 | Good | PM2.5 |
| Oct 30, 2024 | 4 | Good | PM2.5 |
| Oct 27, 2024 | 11 | Good | PM2.5 |
| Oct 24, 2024 | 6 | Good | PM2.5 |
| Oct 21, 2024 | 7 | Good | PM2.5 |
| Oct 18, 2024 | 8 | Good | PM2.5 |
| Oct 15, 2024 | 19 | Good | PM2.5 |
| Oct 12, 2024 | 18 | Good | PM2.5 |
| Oct 9, 2024 | 17 | Good | PM2.5 |
| Oct 6, 2024 | 22 | Good | PM2.5 |
| Oct 3, 2024 | 12 | Good | PM2.5 |
| Sep 30, 2024 | 14 | Good | PM2.5 |
| Sep 27, 2024 | 15 | Good | PM2.5 |
| Sep 24, 2024 | 9 | Good | PM2.5 |
| Sep 21, 2024 | 7 | Good | PM2.5 |
| Sep 18, 2024 | 11 | Good | PM2.5 |
| Sep 15, 2024 | 14 | Good | PM2.5 |
| Sep 12, 2024 | 30 | Good | PM2.5 |
| Sep 9, 2024 | 16 | Good | PM2.5 |
| Sep 6, 2024 | 32 | Good | PM2.5 |
| Sep 3, 2024 | 16 | Good | PM2.5 |
| Aug 31, 2024 | 17 | Good | PM2.5 |
| Aug 28, 2024 | 14 | Good | PM2.5 |
| Aug 25, 2024 | 9 | Good | PM2.5 |
| Aug 22, 2024 | 8 | Good | PM2.5 |
| Aug 19, 2024 | 12 | Good | PM2.5 |
| Aug 16, 2024 | 10 | Good | PM2.5 |
| Aug 13, 2024 | 8 | Good | PM2.5 |
| Aug 10, 2024 | 9 | Good | PM2.5 |
| Aug 7, 2024 | 13 | Good | PM2.5 |
| Aug 4, 2024 | 19 | Good | PM2.5 |
| Aug 1, 2024 | 21 | Good | PM2.5 |
| Jul 29, 2024 | 18 | Good | PM2.5 |
| Jul 26, 2024 | 23 | Good | PM2.5 |
| Jul 23, 2024 | 51 | Moderate | PM2.5 |
| Jul 20, 2024 | 17 | Good | PM2.5 |
| Jul 17, 2024 | 19 | Good | PM2.5 |
| Jul 14, 2024 | 22 | Good | PM2.5 |
| Jul 11, 2024 | 22 | Good | PM2.5 |
| Jul 8, 2024 | 14 | Good | PM2.5 |
| Jul 5, 2024 | 7 | Good | PM2.5 |
| Jul 2, 2024 | 15 | Good | PM2.5 |
| Jun 29, 2024 | 13 | Good | PM2.5 |
| Jun 26, 2024 | 17 | Good | PM2.5 |
| Jun 23, 2024 | 16 | Good | PM2.5 |
| Jun 20, 2024 | 26 | Good | PM2.5 |
| Jun 17, 2024 | 15 | Good | PM2.5 |
| Jun 14, 2024 | 14 | Good | PM2.5 |
| Jun 11, 2024 | 18 | Good | PM2.5 |
| Jun 8, 2024 | 20 | Good | PM2.5 |
| Jun 5, 2024 | 11 | Good | PM2.5 |
| Jun 2, 2024 | 17 | Good | PM2.5 |
| May 30, 2024 | 14 | Good | PM2.5 |
| May 27, 2024 | 13 | Good | PM2.5 |
| May 24, 2024 | 21 | Good | PM2.5 |
| May 21, 2024 | 17 | Good | PM2.5 |
| May 18, 2024 | 14 | Good | PM2.5 |
| May 15, 2024 | 9 | Good | PM2.5 |
| May 12, 2024 | 9 | Good | PM2.5 |
| May 9, 2024 | 13 | Good | PM2.5 |
| May 6, 2024 | 4 | Good | PM2.5 |
| May 3, 2024 | 21 | Good | PM2.5 |
| Apr 30, 2024 | 11 | Good | PM2.5 |
| Apr 27, 2024 | 6 | Good | PM2.5 |
| Apr 24, 2024 | 12 | Good | PM2.5 |
| Apr 21, 2024 | 7 | Good | PM2.5 |
| Apr 18, 2024 | 7 | Good | PM2.5 |
| Apr 15, 2024 | 7 | Good | PM2.5 |
| Apr 12, 2024 | 15 | Good | PM2.5 |
| Apr 9, 2024 | 10 | Good | PM2.5 |
| Apr 6, 2024 | 4 | Good | PM2.5 |
Monitoring Stations
Weminuche Wilderness
Frequently Asked Questions
What is the air quality in San Juan, Colorado?
Based on EPA data from 2024, San Juan has a median Air Quality Index (AQI) of 9, which is classified as "Good." The primary pollutant is PM2.5. Over the past 10 years, air quality has been stable.
Is San Juan a good place to live for air quality?
San Juan has a 10-year average median AQI of 9. In 2024, there were 120 days with "Good" air quality and 0 days with unhealthy conditions. No special precautions are needed for most people.
What pollutants affect San Juan the most?
The primary pollutant driving the AQI in San Juan is PM2.5. This is monitored by 1 active EPA stations in the county. Other pollutants tracked include ozone, PM10, nitrogen dioxide, sulfur dioxide, and carbon monoxide.
How many air quality monitoring stations are in San Juan?
There are 1 active EPA monitoring stations in San Juan, Colorado. These stations continuously measure pollutant levels and contribute to the daily AQI calculations.