Flint Air Quality in Summer
Across 2019–2025, Flint's summer (June–August) air quality had a median AQI of 44 (Good) over 643 monitored days in the Flint, MI area. 2.5% of summer days (16 of 643) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 62.5% of days. The cleanest summer on record here was 2019 (median AQI 46, 0 days above 100) and the worst was 2023 (median 48, 9 days above 100, peak AQI 178).
- Good: 63.3%
- Moderate: 34.2%
- Unhealthy for Sensitive Groups: 2.0%
- Unhealthy or worse: 0.5%
Improve Indoor Air Quality
Even with good outdoor air in Flint, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
Recommended: Levoit Core 400S — True HEPA · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Flint in summer?
Good on a typical day: median AQI 44 across 2019–2025, with 2.5% of summer days above AQI 100. Ground-level ozone is the main driver.
- ✓63.3% of summer days were Good (AQI 0–50), 34.2% Moderate (51–100).
- ✓16 days of 643 reached AQI 101+; the summer peak was 178.
- ✓Cleanest month: August; worst month: June.
Frequently asked questions
What is the air quality like in Flint in summer?▾
Across 2019–2025, the median daily AQI in Flint in summer was 44 (Good). 63.3% of days were Good, 34.2% Moderate, and 2.5% reached Unhealthy for Sensitive Groups or worse, based on 643 monitored days in EPA's Air Quality System.
Is summer a good time for outdoor exercise in Flint?▾
A typical summer day in Flint sits in the Good range (median AQI 44), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 40 of summer days (2.5%) reached AQI 101+ in 2019–2025.
Which pollutant causes Flint's summer air quality problems?▾
Ground-level ozone set the daily AQI on 62.5% of summer days in Flint. The highest summer AQI recorded in 2019–2025 was 178 (Unhealthy), in 2023.
Flint summer air quality, year by year
Flint summer air quality by year (Flint, MI, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 92 | 46 | 0 | 74 | PM2.5 |
| 2020 | 92 | 43 | 1 | 126 | O3 |
| 2021 | 92 | 47 | 2 | 105 | O3 |
| 2022 | 92 | 44 | 1 | 112 | O3 |
| 2023worst | 92 | 48 | 9 | 178 | O3 |
| 2024 | 92 | 47 | 1 | 119 | O3 |
| 2025 | 91 | 40 | 2 | 126 | O3 |
What summer air means in Flint
A typical summer day in Flint sits in the Good range (median AQI 44), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 40 of summer days (2.5%) reached AQI 101+ in 2019–2025.
Summer's median AQI of 44 is in line with Flint's whole-year median of 42, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median Summer AQI across every EPA metro area (308,645 metro-days, 2019–2025) is 46, so Flint runs in line with the national Summer norm; 2.5% of its Summer days topped AQI 100 versus 3.6% nationally (below average).
Within the season, August is the cleanest month (median AQI 39, 0.0% of days above 100) and June the worst (median 51, 6.2% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Flint
The latest EPA AirNow observation puts Flint's AQI at 20 (PM2.5). The figures above are multi-year season 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.