Omaha Air Quality in 2021
In 2021, Omaha's air quality (Omaha-Council Bluffs, NE-IA area) had a median daily AQI of 47 (Good) across 365 monitored days. 5 days (1.4%) reached Unhealthy for Sensitive Groups or worse, 212 were Good, and the year's peak AQI was 150 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 224 of those days. The cleanest month of 2021 was November (median AQI 35, 0 days above 100) and the worst was June (median 54, 2 days above 100, peak 150).
- Good: 58.1%
- Moderate: 40.5%
- Unhealthy for Sensitive Groups: 1.4%
- Unhealthy or worse: 0.0%
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How was Omaha's air quality in 2021?
Good on a typical day: median AQI 47, with 5 days above AQI 100 out of 365 monitored — the 6th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2021: 150 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 224 days.
- ✓Cleanest month: November; worst: June.
Frequently asked questions
What was the average AQI in Omaha in 2021?▾
EPA's Air Quality System puts Omaha's (Omaha-Council Bluffs, NE-IA) median daily AQI for 2021 at 47, which is Good. 5 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 150.
Which month had the worst air quality in Omaha in 2021?▾
The cleanest month of 2021 was November (median AQI 35, 0 days above 100) and the worst was June (median 54, 2 days above 100, peak 150).
Was 2021 a good or bad year for Omaha's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2021 ranks 6th cleanest by days above AQI 100. 2021's median of 47 is in line with the area's typical annual median of 47.
Omaha month by month in 2021
Omaha air quality month by month, 2021 (Omaha-Council Bluffs, NE-IA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 44 | 0 | 87 | PM2.5 |
| February | 28 | 52 | 0 | 77 | PM2.5 |
| March | 31 | 43 | 0 | 60 | PM2.5 |
| April | 30 | 45 | 0 | 68 | O3 |
| May | 31 | 40 | 0 | 61 | O3 |
| Juneworst | 30 | 54 | 2 | 150 | O3 |
| July | 31 | 61 | 2 | 125 | PM2.5 |
| August | 31 | 53 | 1 | 111 | PM2.5 |
| September | 30 | 48 | 0 | 59 | PM2.5 |
| October | 31 | 43 | 0 | 61 | PM2.5 |
| Novembercleanest | 30 | 35 | 0 | 60 | PM10 |
| December | 31 | 42 | 0 | 78 | PM2.5 |
How 2021 compares
Among the 7 years EPA has published for the area (2019–2025), 2021 ranks 6th cleanest by days above AQI 100.
2021's median of 47 is in line with the area's typical annual median of 47.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Omaha
The latest EPA AirNow observation puts Omaha's AQI at 26 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Omaha air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Omaha-Council Bluffs, NE-IA), 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.