Beresford, South Dakota Air Quality
Beresford has a median AQI of 44, earning an air quality grade of A- — excellent air quality that ranks better than 41% of US cities. Air quality has been trending worse over the past decade, a concern for local residents and health officials. Ground-level ozone is the primary concern, typically peaking on warm sunny days due to vehicle and industrial emissions. In 2021, Beresford recorded 179 good air quality days (66% of monitored days) and 4 unhealthy days.
Population: 2,360 • County: Union
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Quick Facts
| Current AQI | 57 — Moderate |
| Air Quality Grade | A- |
| Median AQI (2021) | 44 |
| vs. U.S. Cities | Better than 41% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 4 |
| 10-Year Trend | ↓ Worsening |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is acceptable. However, there may be a risk for some people who are unusually sensitive to air pollution.
Unusually sensitive people should consider reducing prolonged or heavy outdoor exertion.
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
2021 Air Quality Summary
Primary Pollutant Days (2021)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Beresford Air Quality
What is the air quality in Beresford today?
The current AQI in Beresford is 57, which is rated "Moderate". Air quality is acceptable. However, there may be a risk for some people who are unusually sensitive to air pollution.
Is air quality in Beresford getting better or worse?
Air quality in Beresford has been worsening in recent years. The median AQI rose from 38 in 2016 to 44 in 2021.
What is the most common air pollutant in Beresford?
Ozone is the primary air pollutant in Beresford, responsible for the most air quality-impacted days in 2021. Ground-level ozone forms when sunlight reacts with vehicle and industrial emissions on warm days.
How many unhealthy air days does Beresford have per year?
In 2021, Beresford had 4 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 179 good days and 90 moderate days out of 273 days monitored.
What air quality grade does Beresford receive?
Beresford receives an air quality grade of A-, placing it better than 41% of US cities. This grade is based on a median AQI of 44 for 2021, derived from EPA monitoring data.
Air Quality Grade
Better than 41% of US cities
Nearby Cities
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National Rankings
See how Beresford compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Beresford
Based on your area's air quality (median AQI: 44), we recommend these air purifiers to help protect your health indoors.
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