Northampton, Pennsylvania Air Quality
Northampton County, Pennsylvania (PA)
↓ Improvingover 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). This area has seen measurable air quality improvement over the 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 | 46 | 68 | 368 | 209 | 146 | 7 | PM2.5 |
| 2022 | 45 | 64 | 118 | 224 | 132 | 2 | PM2.5 |
| 2021 | 45 | 67 | 148 | 214 | 147 | 4 | PM2.5 |
| 2020 | 41 | 59 | 117 | 260 | 104 | 1 | PM2.5 |
| 2019 | 44 | 66 | 114 | 238 | 122 | 3 | PM2.5 |
| 2018 | 48 | 77 | 136 | 194 | 166 | 5 | PM2.5 |
| 2017 | 56 | 76 | 119 | 105 | 259 | 1 | PM2.5 |
| 2016 | 53 | 77 | 242 | 153 | 203 | 10 | PM2.5 |
| 2015 | 56 | 80 | 119 | 124 | 236 | 5 | PM2.5 |
| 2014 | 53 | 74 | 118 | 148 | 214 | 3 | PM2.5 |
What This Means for Northampton County Residents
Northampton, Pennsylvania has received an Air Quality Grade of B (72/100) based on a decade of EPA monitoring data. The current median AQI of 46 falls in the "Good" range.
Encouragingly, air quality here has been improving, with the median AQI dropping by 7 points over the monitoring period. This trend suggests continued investment in emission controls and cleaner energy.
The primary pollutant affecting this area is Fine Particulate Matter (PM2.5). Over the past 5 years, this area has averaged 3 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.