Savannah Air Quality in December
Across 2019–2025, Savannah's December air quality had a median AQI of 50 (Good) over 183 monitored days in the Savannah, GA area. 0.5% of December days (1 of 183) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 100.0% of days. The cleanest December on record here was 2023 (median AQI 39, 0 days above 100) and the worst was 2021 (median 53, 1 day above 100, peak AQI 103).
- Good: 50.3%
- Moderate: 49.2%
- Unhealthy for Sensitive Groups: 0.5%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Savannah
Today's main pollutant in Savannah is ground-level ozone (AQI 31). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
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How is the air in Savannah in December?
Good on a typical day: median AQI 50 across 2019–2025, with 0.5% of December days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓50.3% of December days were Good (AQI 0–50), 49.2% Moderate (51–100).
- ✓1 day of 183 reached AQI 101+; the December peak was 103.
- ✓Best December: 2023; worst December: 2021.
Frequently asked questions
What is the air quality like in Savannah in December?▾
Across 2019–2025, the median daily AQI in Savannah in December was 50 (Good). 50.3% of days were Good, 49.2% Moderate, and 0.5% reached Unhealthy for Sensitive Groups or worse, based on 183 monitored days in EPA's Air Quality System.
Is December a good time for outdoor exercise in Savannah?▾
A typical December day in Savannah sits in the Good range (median AQI 50), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of December days reached AQI 101+ in 2019–2025.
Which pollutant causes Savannah's December air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 100.0% of December days in Savannah. The highest December AQI recorded in 2019–2025 was 103 (Unhealthy for Sensitive Groups), in 2021.
Savannah December air quality, year by year
Savannah December air quality by year (Savannah, GA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 26 | 48 | 0 | 64 | PM2.5 |
| 2020 | 31 | 58 | 0 | 85 | PM2.5 |
| 2021worst | 29 | 53 | 1 | 103 | PM2.5 |
| 2022 | 4 | 51 | 0 | 58 | PM2.5 |
| 2023cleanest | 31 | 39 | 0 | 65 | PM2.5 |
| 2024 | 31 | 48 | 0 | 63 | PM2.5 |
| 2025 | 31 | 53 | 0 | 75 | PM2.5 |
What December air means in Savannah
A typical December day in Savannah sits in the Good range (median AQI 50), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of December days reached AQI 101+ in 2019–2025.
December's median AQI of 50 is above Savannah's whole-year median of 46, making it one of the area's dirtier periods. Nationally, the median December AQI across every EPA metro area (95,590 metro-days, 2019–2025) is 39, so Savannah runs above the national December norm; 0.5% of its December days topped AQI 100 versus 0.7% nationally (about the same).
December is part of Savannah's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Savannah
The latest EPA AirNow observation puts Savannah's AQI at 31 (O3). The figures above are multi-year month statistics, not today's reading.
View current Savannah air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Savannah, 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.