Lincoln Air Quality in 2021
In 2021, Lincoln's air quality (Lincoln, NE area) had a median daily AQI of 37 (Good) across 276 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 246 were Good, and the year's peak AQI was 84 (Moderate). Ground-level ozone set the daily AQI on 201 of those days. The cleanest month of 2021 was November (median AQI 27, 0 days above 100) and the worst was June (median 46, 0 days above 100, peak 84).
- Good: 89.1%
- Moderate: 10.9%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How was Lincoln's air quality in 2021?
Good on a typical day: median AQI 37, with 0 days above AQI 100 out of 276 monitored.
- ✓Peak AQI in 2021: 84 (Moderate).
- ✓Ground-level ozone was the main pollutant on 201 days.
- ✓Cleanest month: November; worst: June.
Frequently asked questions
What was the average AQI in Lincoln in 2021?▾
EPA's Air Quality System puts Lincoln's (Lincoln, NE) median daily AQI for 2021 at 37, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 84.
Which month had the worst air quality in Lincoln in 2021?▾
The cleanest month of 2021 was November (median AQI 27, 0 days above 100) and the worst was June (median 46, 0 days above 100, peak 84).
Lincoln month by month in 2021
Lincoln air quality month by month, 2021 (Lincoln, NE, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 11 | 29 | 0 | 69 | PM2.5 |
| February | 7 | 37 | 0 | 61 | PM2.5 |
| March | 31 | 34 | 0 | 44 | O3 |
| April | 30 | 36 | 0 | 70 | O3 |
| May | 31 | 36 | 0 | 45 | O3 |
| Juneworst | 30 | 46 | 0 | 84 | O3 |
| July | 31 | 44 | 0 | 69 | O3 |
| August | 28 | 38 | 0 | 80 | O3 |
| September | 30 | 36 | 0 | 57 | O3 |
| October | 27 | 29 | 0 | 81 | O3 |
| Novembercleanest | 10 | 27 | 0 | 44 | PM2.5 |
| December | 10 | 36 | 0 | 72 | PM2.5 |
How 2021 compares
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Lincoln
The latest EPA AirNow observation puts Lincoln's AQI at 25 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Lincoln air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Lincoln, NE), 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.