Providence Air Quality in December
Across 2019–2025, Providence's December air quality had a median AQI of 48 (Good) over 217 monitored days in the Providence-Warwick, RI-MA area. 0.0% of December days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 81.1% of days. The cleanest December on record here was 2022 (median AQI 38, 0 days above 100) and the worst was 2019 (median 54, 0 days above 100, peak AQI 80).
- Good: 51.6%
- Moderate: 48.4%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Providence in December?
Good on a typical day: median AQI 48 across 2019–2025, with 0.0% of December days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓51.6% of December days were Good (AQI 0–50), 48.4% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the December peak was 92.
- ✓Best December: 2022; worst December: 2019.
Frequently asked questions
What is the air quality like in Providence in December?▾
Across 2019–2025, the median daily AQI in Providence in December was 48 (Good). 51.6% of days were Good, 48.4% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is December a good time for outdoor exercise in Providence?▾
A typical December day in Providence sits in the Good range (median AQI 48), 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 Providence's December air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 81.1% of December days in Providence. The highest December AQI recorded in 2019–2025 was 92 (Moderate), in 2019.
Providence December air quality, year by year
Providence December air quality by year (Providence-Warwick, RI-MA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 31 | 54 | 0 | 80 | PM2.5 |
| 2020 | 31 | 48 | 0 | 92 | PM2.5 |
| 2021 | 31 | 53 | 0 | 64 | PM2.5 |
| 2022cleanest | 31 | 38 | 0 | 69 | PM2.5 |
| 2023 | 31 | 52 | 0 | 69 | PM2.5 |
| 2024 | 31 | 47 | 0 | 71 | PM2.5 |
| 2025 | 31 | 41 | 0 | 61 | PM2.5 |
What December air means in Providence
A typical December day in Providence sits in the Good range (median AQI 48), 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 48 is in line with Providence's whole-year median of 47, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median December AQI across every EPA metro area (95,590 metro-days, 2019–2025) is 39, so Providence runs above the national December norm; 0.0% of its December days topped AQI 100 versus 0.7% nationally (about the same).
December is part of Providence's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Providence
The latest EPA AirNow observation puts Providence's AQI at 43 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Providence air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Providence-Warwick, RI-MA), 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.