Montgomery, Texas Air Quality
Montgomery County, Texas (TX)
→ Stableover 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 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 | 53 | 75 | 122 | 151 | 204 | 9 | PM2.5 |
| 2022 | 51 | 71 | 126 | 175 | 183 | 6 | PM2.5 |
| 2021 | 47 | 66 | 151 | 204 | 152 | 3 | PM2.5 |
| 2020 | 44 | 64 | 129 | 219 | 139 | 8 | PM2.5 |
| 2019 | 44 | 61 | 143 | 261 | 99 | 5 | Ozone |
| 2018 | 44 | 74 | 156 | 231 | 123 | 11 | PM2.5 |
| 2017 | 46 | 68 | 140 | 227 | 129 | 7 | PM2.5 |
| 2016 | 49 | 63 | 133 | 197 | 165 | 4 | PM2.5 |
| 2015 | 48 | 74 | 133 | 195 | 165 | 5 | PM2.5 |
| 2014 | 49 | 67 | 133 | 186 | 175 | 4 | PM2.5 |
What This Means for Montgomery County Residents
Montgomery, Texas has received an Air Quality Grade of C (57/100) based on a decade of EPA monitoring data. The current median AQI of 53 falls in the "Moderate" range.
The primary pollutant affecting this area is Fine Particulate Matter (PM2.5). Over the past 5 years, this area has averaged 6 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.