Holly Springs, North Carolina Air Quality
Holly Springs has a median AQI of 44, earning an air quality grade of A- — excellent air quality that ranks better than 31% of US cities. Air quality has been improving steadily over the past decade, a positive sign for residents. Particulate matter (PM2.5) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2025, Holly Springs recorded 181 good air quality days (66% of monitored days).
Population: 45,248 • County: Wake
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Quick Facts
| Current AQI | 14 — Good |
| Air Quality Grade | A- |
| Median AQI (2025) | 44 |
| vs. U.S. Cities | Better than 31% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | ↑ Improving |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 30 Days
Current Pollutant Levels
Real-time data from EPA AirNow
AQI Trend (10 Years)
Air Quality Days by Year
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Holly Springs Air Quality
What is the air quality in Holly Springs today?
The current AQI in Holly Springs is 14, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Holly Springs getting better or worse?
Air quality in Holly Springs has been improving over the past decade. The median AQI dropped from 53 in 2016 to 44 in 2025.
What is the most common air pollutant in Holly Springs?
PM2.5 is the primary air pollutant in Holly Springs, responsible for the most air quality-impacted days in 2025. Particulate matter can originate from vehicle exhaust, wildfires, and industrial emissions.
How many unhealthy air days does Holly Springs have per year?
In 2025, Holly Springs had 0 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 181 good days and 92 moderate days out of 273 days monitored.
What air quality grade does Holly Springs receive?
Holly Springs receives an air quality grade of A-, placing it better than 31% of US cities. This grade is based on a median AQI of 44 for 2025, derived from EPA monitoring data.
Air Quality Grade
Better than 31% of US cities
Nearby Cities
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National Rankings
See how Holly Springs compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Holly Springs
Based on your area's air quality (median AQI: 44), we recommend these air purifiers to help protect your health indoors.
RabbitAir MinusA2
Stylish wall-mountable design with customizable artwork panels.
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Other Great Options
Molekule Air Pro
Commercial-grade with patented PECO technology for destroying pollutants.
Blueair Blue Pure 211+
High performance for large rooms with simple operation.
Dyson Pure Cool TP04
Premium all-in-one air purifier and fan with advanced features.
Not sure which air purifier is right for you?
Learn more about different types of air purifiers and how to choose the best one for your needs.
Read our complete buying guide →