The highest AQ index in Pennsylvania (as of 22:00 EDT) is currently the State College area. Ozone (OZONE) is measuring at 47 (Good). This means air quality is satisfactory, and air pollution poses little or no risk.
Over the next few days, the highest Ozone (OZONE) will be in the Susquehanna Valley area. It is forecasted to be Moderate, meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Current Conditions at 2 p.m. EDT this Friday afternoon: Partly sunny skies with cooler temperatures today across the region with a shower in spots. A northwesterly surface flow has brought somewhat cleaner air in, so fine particle pollution (PM2.5) levels have improved to the good range. However, ozone levels are climbing to lower moderate. *** Saturday’s forecast: Well above normal temperatures will continue for another day Saturday under a south to southeast surface wind. Highs will reach into the middle 70s. Both PM2.5 and ozone will move to moderate levels with partly sunny skies. A cold frontal approach brings showers and perhaps a thunderstorm on Saturday night. *** Sunday’s forecast: Turning much cooler Sunday with rain and rain showers persisting into the late morning. The remainder of the day will be mostly cloudy with temperatures not rising above the upper 50s. Ozone and PM2.5 will lower to the good range. *** Monday’s forecast: Good air quality continues Monday, and it will be the coolest day of the forecast period with highs struggling to get to the lower 50s. Frost and freezing temperatures are likely in many locations Monday night as high pressure settles overhead. *** Extended forecast: Surface winds turn southwesterly Tuesday and Wednesday, allowing for a warming trend. Air quality will continue to be good Tuesday, but may turn moderate in parts of the area during the middle of the week.---McAuliffe
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
| Color | ||||||
| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 14 minutes ago
Below is a list of counties in Pennsylvania. Click on any county below and you'll get a list of cities where we provide AQ index forecasts.