Ottawa, Michigan Air Quality
Ottawa County, Michigan (MI)
↑ Worseningover 10 years
10-Year AQI Trend
The solid line shows the median AQI each year. The dashed line shows the 90th percentile (worst 10% of days). Air quality in this area has been declining over the past decade.
Air Quality Day Breakdown
Number of days per year in each EPA AQI category. Green = Good (AQI 0-50), Yellow = Moderate (51-100), Orange = Unhealthy for Sensitive Groups (101-150), Red = Unhealthy or worse (151+).
Year-by-Year Data
| Year | Median AQI | 90th Pct | Max AQI | Good Days | Moderate | Unhealthy+ | Pollutant |
|---|---|---|---|---|---|---|---|
| 2023 | 51 | 74 | 227 | 176 | 172 | 8 | PM2.5 |
| 2022 | 46 | 67 | 164 | 194 | 134 | 4 | PM2.5 |
| 2021 | 49 | 71 | 108 | 186 | 175 | 4 | PM2.5 |
| 2020 | 35 | 59 | 150 | 303 | 56 | 6 | Ozone |
| 2019 | 37 | 61 | 100 | 300 | 60 | 0 | Ozone |
| 2018 | 40 | 64 | 115 | 224 | 61 | 4 | Ozone |
| 2017 | 40 | 61 | 97 | 205 | 40 | 0 | Ozone |
| 2016 | 41 | 74 | 133 | 131 | 28 | 7 | Ozone |
| 2015 | 42 | 64 | 122 | 133 | 27 | 1 | Ozone |
| 2014 | 43 | 74 | 112 | 139 | 34 | 4 | Ozone |
What This Means for Ottawa County Residents
Ottawa, Michigan has received an Air Quality Grade of C (57/100) based on a decade of EPA monitoring data. The current median AQI of 51 falls in the "Moderate" range.
Concerning trends show air quality has been declining, with the median AQI rising by 8 points over the monitoring period. This could be driven by increased development, wildfire smoke, or industrial activity.
The primary pollutant affecting this area is Ground-Level Ozone. Over the past 5 years, this area has averaged 4 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.