Flint Air Quality in 2019
In 2019, Flint's air quality (Flint, MI area) had a median daily AQI of 42 (Good) across 340 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 225 were Good, and the year's peak AQI was 75 (Moderate). Fine particulate matter (PM2.5) set the daily AQI on 195 of those days. The cleanest month of 2019 was October (median AQI 30, 0 days above 100) and the worst was February (median 53, 0 days above 100, peak 72).
- Good: 66.2%
- Moderate: 33.8%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How was Flint's air quality in 2019?
Good on a typical day: median AQI 42, with 0 days above AQI 100 out of 340 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2019: 75 (Moderate).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 195 days.
- ✓Cleanest month: October; worst: February.
Frequently asked questions
What was the average AQI in Flint in 2019?▾
EPA's Air Quality System puts Flint's (Flint, MI) median daily AQI for 2019 at 42, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 75.
Which month had the worst air quality in Flint in 2019?▾
The cleanest month of 2019 was October (median AQI 30, 0 days above 100) and the worst was February (median 53, 0 days above 100, peak 72).
Was 2019 a good or bad year for Flint'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 42 is in line with the area's typical annual median of 42.
Flint month by month in 2019
Flint air quality month by month, 2019 (Flint, MI, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 19 | 39 | 0 | 66 | PM2.5 |
| Februaryworst | 15 | 53 | 0 | 72 | PM2.5 |
| March | 31 | 51 | 0 | 72 | PM2.5 |
| April | 30 | 43 | 0 | 69 | O3 |
| May | 31 | 42 | 0 | 63 | O3 |
| June | 30 | 51 | 0 | 74 | PM2.5 |
| July | 31 | 52 | 0 | 74 | PM2.5 |
| August | 31 | 37 | 0 | 60 | O3 |
| September | 30 | 34 | 0 | 71 | O3 |
| Octobercleanest | 31 | 30 | 0 | 53 | O3 |
| November | 30 | 36 | 0 | 75 | PM2.5 |
| December | 31 | 49 | 0 | 68 | 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 42 is in line with the area's typical annual median of 42.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Flint
The latest EPA AirNow observation puts Flint's AQI at 31 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Flint air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Flint, 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.