Raleigh Air Quality in April
Across 2019–2025, Raleigh's April air quality had a median AQI of 49 (Good) over 210 monitored days in the Raleigh, NC 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 53.8% of days. The cleanest April on record here was 2020 (median AQI 44, 0 days above 100) and the worst was 2019 (median 54, 0 days above 100, peak AQI 71).
- Good: 52.9%
- Moderate: 47.1%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Improve Indoor Air Quality
Even with good outdoor air in Raleigh, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
Recommended: Levoit Core 400S — True HEPA · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Raleigh in April?
Good on a typical day: median AQI 49 across 2019–2025, with 0.0% of April days above AQI 100. Ground-level ozone is the main driver.
- ✓52.9% of April days were Good (AQI 0–50), 47.1% Moderate (51–100).
- ✓0 days of 210 reached AQI 101+; the April peak was 97.
- ✓Best April: 2020; worst April: 2019.
Frequently asked questions
What is the air quality like in Raleigh in April?▾
Across 2019–2025, the median daily AQI in Raleigh in April was 49 (Good). 52.9% of days were Good, 47.1% 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 Raleigh?▾
A typical April day in Raleigh sits in the Good range (median AQI 49), 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 Raleigh's April air quality problems?▾
Ground-level ozone set the daily AQI on 53.8% of April days in Raleigh. The highest April AQI recorded in 2019–2025 was 97 (Moderate), in 2019.
Raleigh April air quality, year by year
Raleigh April air quality by year (Raleigh, NC, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 30 | 54 | 0 | 71 | PM2.5 |
| 2020cleanest | 30 | 44 | 0 | 61 | O3 |
| 2021 | 30 | 52 | 0 | 97 | O3 |
| 2022 | 30 | 47 | 0 | 61 | O3 |
| 2023 | 30 | 46 | 0 | 80 | O3 |
| 2024 | 30 | 53 | 0 | 71 | PM2.5 |
| 2025 | 30 | 50 | 0 | 61 | O3 |
What April air means in Raleigh
A typical April day in Raleigh sits in the Good range (median AQI 49), 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 49 is in line with Raleigh's whole-year median of 48, 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 Raleigh runs above the national April norm; 0.0% of its April days topped AQI 100 versus 0.7% nationally (about the same).
April is part of Raleigh's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Raleigh
The latest EPA AirNow observation puts Raleigh's AQI at 47 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Raleigh air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Raleigh, NC), 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.