Lansing Air Quality in 2019
In 2019, Lansing's air quality (Lansing-East Lansing, MI area) had a median daily AQI of 40 (Good) across 365 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 273 were Good, and the year's peak AQI was 78 (Moderate). Fine particulate matter (PM2.5) set the daily AQI on 203 of those days. The cleanest month of 2019 was October (median AQI 27, 0 days above 100) and the worst was July (median 51, 0 days above 100, peak 67).
- Good: 74.8%
- Moderate: 25.2%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How was Lansing's air quality in 2019?
Good on a typical day: median AQI 40, with 0 days above AQI 100 out of 365 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2019: 78 (Moderate).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 203 days.
- ✓Cleanest month: October; worst: July.
Frequently asked questions
What was the average AQI in Lansing in 2019?▾
EPA's Air Quality System puts Lansing's (Lansing-East Lansing, MI) median daily AQI for 2019 at 40, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 78.
Which month had the worst air quality in Lansing in 2019?▾
The cleanest month of 2019 was October (median AQI 27, 0 days above 100) and the worst was July (median 51, 0 days above 100, peak 67).
Was 2019 a good or bad year for Lansing's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2019's median of 40 is in line with the area's typical annual median of 40.
Lansing month by month in 2019
Lansing air quality month by month, 2019 (Lansing-East Lansing, MI, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 41 | 0 | 66 | PM2.5 |
| February | 28 | 42 | 0 | 78 | PM2.5 |
| March | 31 | 44 | 0 | 73 | PM2.5 |
| April | 30 | 41 | 0 | 64 | O3 |
| May | 31 | 39 | 0 | 55 | O3 |
| June | 30 | 47 | 0 | 61 | PM2.5 |
| Julyworst | 31 | 51 | 0 | 67 | PM2.5 |
| August | 31 | 37 | 0 | 55 | PM2.5 |
| September | 30 | 41 | 0 | 60 | PM2.5 |
| Octobercleanest | 31 | 27 | 0 | 38 | O3 |
| November | 30 | 40 | 0 | 67 | PM2.5 |
| December | 31 | 48 | 0 | 76 | PM2.5 |
How 2019 compares
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2019's median of 40 is in line with the area's typical annual median of 40.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Lansing
The latest EPA AirNow observation puts Lansing's AQI at 25 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Lansing air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Lansing-East Lansing, MI), 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.