Columbia Air Quality in April
Across 2019–2025, Columbia's April air quality had a median AQI of 47 (Good) over 210 monitored days in the Columbia, SC area. 0.0% of April days (0 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 50.0% of days. The cleanest April on record here was 2019 (median AQI 40, 0 days above 100) and the worst was 2021 (median 54, 0 days above 100, peak AQI 84).
- Good: 57.1%
- Moderate: 42.9%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Extra Protection for Columbia Homes
Air quality in Columbia is moderate (AQI 52), 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.
Recommended: Coway AP-1512HH Mighty — True HEPA + carbon · CADR ~246 CFM · rooms up to 361 sq ft
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How is the air in Columbia in April?
Good on a typical day: median AQI 47 across 2019–2025, with 0.0% of April days above AQI 100. Ground-level ozone is the main driver.
- ✓57.1% of April days were Good (AQI 0–50), 42.9% Moderate (51–100).
- ✓0 days of 210 reached AQI 101+; the April peak was 97.
- ✓Best April: 2019; worst April: 2021.
Frequently asked questions
What is the air quality like in Columbia in April?▾
Across 2019–2025, the median daily AQI in Columbia in April was 47 (Good). 57.1% of days were Good, 42.9% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is April a good time for outdoor exercise in Columbia?▾
A typical April day in Columbia sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of April days reached AQI 101+ in 2019–2025.
Which pollutant causes Columbia's April air quality problems?▾
Ground-level ozone set the daily AQI on 50.0% of April days in Columbia. The highest April AQI recorded in 2019–2025 was 97 (Moderate), in 2021.
Columbia April air quality, year by year
Columbia April air quality by year (Columbia, SC, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 30 | 40 | 0 | 56 | PM2.5 |
| 2020 | 30 | 46 | 0 | 61 | O3 |
| 2021worst | 30 | 54 | 0 | 84 | O3 |
| 2022 | 30 | 50 | 0 | 87 | O3 |
| 2023 | 30 | 49 | 0 | 97 | O3 |
| 2024 | 30 | 52 | 0 | 70 | PM2.5 |
| 2025 | 30 | 48 | 0 | 77 | PM2.5 |
What April air means in Columbia
A typical April day in Columbia sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of April days reached AQI 101+ in 2019–2025.
April's median AQI of 47 is in line with Columbia's whole-year median of 47, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median April AQI across every EPA metro area (100,677 metro-days, 2019–2025) is 44, so Columbia runs in line with the national April norm; 0.0% of its April days topped AQI 100 versus 0.7% nationally (about the same).
April is part of Columbia's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Columbia
The latest EPA AirNow observation puts Columbia's AQI at 52 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Columbia air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Columbia, SC), 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.