Atlanta Air Quality in 2020
In 2020, Atlanta's air quality (Atlanta-Sandy Springs-Roswell, GA area) had a median daily AQI of 53 (Moderate) across 366 monitored days. 3 days (0.8%) reached Unhealthy for Sensitive Groups or worse, 151 were Good, and the year's peak AQI was 125 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 298 of those days. The cleanest month of 2020 was February (median AQI 42, 0 days above 100) and the worst was June (median 56, 1 day above 100, peak 106).
- Good: 41.3%
- Moderate: 57.9%
- Unhealthy for Sensitive Groups: 0.8%
- Unhealthy or worse: 0.0%
Extra Protection for Atlanta Homes
Air quality in Atlanta is moderate (AQI 57), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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How was Atlanta's air quality in 2020?
Moderate on a typical day: median AQI 53, with 3 days above AQI 100 out of 366 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2020: 125 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 298 days.
- ✓Cleanest month: February; worst: June.
Frequently asked questions
What was the average AQI in Atlanta in 2020?▾
EPA's Air Quality System puts Atlanta's (Atlanta-Sandy Springs-Roswell, GA) median daily AQI for 2020 at 53, which is Moderate. 3 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 125.
Which month had the worst air quality in Atlanta in 2020?▾
The cleanest month of 2020 was February (median AQI 42, 0 days above 100) and the worst was June (median 56, 1 day above 100, peak 106).
Was 2020 a good or bad year for Atlanta's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2020 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2020's median of 53 is in line with the area's typical annual median of 54.
Atlanta month by month in 2020
Atlanta air quality month by month, 2020 (Atlanta-Sandy Springs-Roswell, GA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 43 | 0 | 58 | PM2.5 |
| Februarycleanest | 29 | 42 | 0 | 59 | PM2.5 |
| March | 31 | 55 | 0 | 76 | PM2.5 |
| April | 30 | 52 | 0 | 79 | PM2.5 |
| May | 31 | 52 | 1 | 101 | PM2.5 |
| Juneworst | 30 | 56 | 1 | 106 | PM2.5 |
| July | 31 | 56 | 1 | 125 | PM2.5 |
| August | 31 | 57 | 0 | 93 | PM2.5 |
| September | 30 | 51 | 0 | 84 | PM2.5 |
| October | 31 | 53 | 0 | 74 | PM2.5 |
| November | 30 | 52 | 0 | 82 | PM2.5 |
| December | 31 | 57 | 0 | 81 | PM2.5 |
How 2020 compares
Among the 7 years EPA has published for the area (2019–2025), 2020 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2020's median of 53 is in line with the area's typical annual median of 54.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Atlanta
The latest EPA AirNow observation puts Atlanta's AQI at 57 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Atlanta air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Atlanta-Sandy Springs-Roswell, GA), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.