Gretna, Virginia Air Quality
Gretna has a median AQI of 3, earning an air quality grade of A+ — excellent air quality that ranks better than 100% of US cities. Air quality has remained relatively stable over the past decade. NO₂ is the primary pollutant driving air quality conditions. In 2022, Gretna recorded 363 good air quality days (100% of monitored days).
Population: 1,452 • County: Pittsylvania
Current AQI
Quick Facts
| Current AQI | 7 — Good |
| Air Quality Grade | A+ |
| Median AQI (2022) | 3 |
| vs. U.S. Cities | Better than 100% |
| Primary Pollutant | NO₂ |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| Data Source | EPA AQS (historical) · AirNow (live) |
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 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Gretna is sourced from the VINTON - Herman Horn ES monitoring area, located approximately 37 miles from city center. This EPA-certified station continuously tracks NO₂, the primary pollutant tracked in this area.
Gretna has relatively consistent air quality throughout the year without a strong seasonal peak. Air quality is primarily influenced by local traffic, industrial activity, and regional weather patterns rather than a single seasonal driver.
AQI Trend (10 Years)
Air Quality Days by Year
Gretna Median AQI by Year
Annual EPA air quality data for Gretna — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2022 | 3 | 363 | — | 28 | NO₂ |
| 2021 | 3 | 335 | — | 21 | NO₂ |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2022 Air Quality Summary
Primary Pollutant Days (2022)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Gretna Air Quality
What is the air quality in Gretna today?
The current AQI in Gretna is 7, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Gretna getting better or worse?
Air quality in Gretna has been stable. The median AQI has remained stable at around 3 over the past decade.
What is the most common air pollutant in Gretna?
NO₂ is the primary air pollutant in Gretna, responsible for 363 days (100% of monitored days) in 2022. NO₂ is regulated by the EPA and monitored continuously across the area.
How many unhealthy air days does Gretna have per year?
In 2022, Gretna recorded 100% good air quality days (363 days) out of 363 monitored days. There were 0 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 28.
What air quality grade does Gretna receive?
Gretna receives an air quality grade of A+, placing it better than 100% of US cities. This is based on a median AQI of 3 in 2022, with 363 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 100% of US cities
Nearby Cities
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National Rankings
See how Gretna compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Gretna
Nitrogen dioxide drives Gretna's air quality days, usually from vehicle traffic and industrial combustion. Look for units with substantial activated carbon layers alongside HEPA filtration.
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