| Tomorrow’s Forecast | ||||
|---|---|---|---|---|
| Tuesday, Feb 17: | 101 AQI | Unhealthy for Sensitive Groups |  | Particle Pollution (2.5 microns) |
Tuesday’s forecast: Air quality will be unhealthy for sensitive groups of the population most of the day Tuesday, especially in the morning and again Tuesday night, with average concentrations in the code ORANGE range.
***AN AIR QUALITY ACTION DAY IS IN EFFECT FOR TUESDAY*** Current Conditions at 2 p.m. EST Monday afternoon: Despite a mostly sunny sky, temperatures are struggling in the middle 20s. Air quality remains in the good range, but fine particle pollution (PM2.5) levels will increase significantly overnight and during the day Tuesday as a strong inversion sets up with a persistent snow cover. Not as cold tonight with a mostly cloudy sky. PM2.5 will increase overnight substantially. *** Tuesday’s forecast: Mostly cloudy and milder Tuesday with a cold front approaching from the west. A bit of snow, ice, and rain is likely during the afternoon/evening. Light winds through the day and a strong morning inversion will maintain PM2.5 concentrations in the code ORANGE range.
| Tomorrow’s Forecast | ||||
|---|---|---|---|---|
| Tuesday, Feb 10: | 105 AQI | Unhealthy for Sensitive Groups | | Particle Pollution (2.5 microns) |
Information provided by Pennsylvania Department of Environmental Protection
The PA Department of Environmental Protection is concerned about wildfire smoke from Canada drifting into Pennsylvania. Excerpts from PADEP message dated Aug. 4, 2025:
| A(n) Air Quality Action Day has been declared for Susquehanna Valley Area, PA, on Tuesday, Aug 5 | ||||
|---|---|---|---|---|
| Tomorrow’s Forecast | ||||
| Tuesday, Aug 5: | 102 AQI | Unhealthy for Sensitive Groups | | Particle Pollution (2.5 microns) |
| 90 AQI | Moderate |  | Ozone | |
Thicker areas of low level smoke still persist to our north and there is concern some of this smoke works it’s way into the area Tuesday and Wednesday. Here are the forecast details:
*** Tuesday’s forecast: An Air Quality Action Day is in effect for Tuesday! Sunshine and a few clouds through near surface smoke Tuesday may result in several hours where PM2.5 concentrations move into the code ORANGE range. In addition, the smoke may act to produce ozone levels in the high moderate range for some time during the afternoon as well. Afternoon highs will reach the middle and upper 80s.
Any persons who are sensitive to air pollution should limit extensive outdoor exertion and visit www.airnow.gov for the latest air quality information in their location.
*** Extended forecast: Increasing clouds and an easterly flow will limit ozone production Wednesday and Thursday, but PM2.5 may still reach into code ORANGE for a time as the smoke may be slow to clear out, especially Wednesday.
* Current air quality monitoring data for the Susquehanna Valley Area and other locations across Pennsylvania can be found at the EPA’s AirNow Interactive Map.
* For information on the Air Quality Index (AQI) and the health effects of ozone and PM-2.5, visit the EPA’s AirNow AQI & Health webpage.
* The AirNow Fire and Smoke Map provides information that you can use to help protect your health from wildfire smoke.
Hello Clean Air Board community,
We want you to know that DEP has declared an Air Quality Action Day for Ozone Pollution on Wednesday, June 4. Here are excerpts from their alert.
| A(n) Air Quality Action Day has been declared for Susquehanna Valley Area, PA, on Wednesday, Jun 4 | ||||
|---|---|---|---|---|
| Tomorrow’s Forecast | ||||
| Wednesday, Jun 4: | 101 AQI | Unhealthy for Sensitive Groups | | Ozone |
| 66 AQI | Moderate | | Particle Pollution (2.5 microns) | |
| Extended Forecast | ||||
| Thursday, Jun 5: | 75 AQI | Moderate | | Ozone |
| 60 AQI | Moderate | | Particle Pollution (2.5 microns) | |
| Friday, Jun 6: | Moderate | | Particle Pollution (2.5 microns) | |
| Moderate | | Ozone | ||
| Here are the forecast details: *** Wednesday’s forecast: An Air Quality Action Day is in effect for Wednesday. Sunshine through a layer of smoke as well as high temperatures in the upper 80s will lead to rapid ozone development, with peak afternoon concentrations in the code ORANGE range. Sensitive persons should take precautions and monitor air quality in their locality by visiting www.airnow.gov. PM2.5 will also increase Wednesday to the lower moderate range. |
| A(n) Air Quality Action Day has been declared for Susquehanna Valley Area, PA, on Tuesday, Jul 9 | ||||
|---|---|---|---|---|
| Tomorrow’s Forecast | ||||
| Tuesday, Jul 9: | 102 AQI | Unhealthy for Sensitive Groups | | Ozone |
This air quality forecast was prepared by the Pennsylvania Department of Environmental Protection (DEP).
* Current air quality monitoring data for the Susquehanna Valley Area and other locations across Pennsylvania can be found at the EPA’s AirNow Interactive Map.
* For information on the Air Quality Index (AQI) and the health effects of ozone and PM-2.5, visit the EPA’s AirNow AQI & Health webpage.
| A(n) Air Quality Action Day has been declared for Susquehanna Valley Area, PA, on Monday, Jul 8 | ||||
|---|---|---|---|---|
| Tomorrow’s Forecast | ||||
| Monday, Jul 8: | 102 AQI | Unhealthy for Sensitive Groups | | Ozone |
An Air Quality Action Day is in effect for the day Monday with ozone levels reaching code ORANGE levels during the afternoon as temperatures rise into the lower to middle 90s. A heat advisory is also in effect for Monday afternoon as well with heat indices reaching just over 100.
* Current air quality monitoring data for the Susquehanna Valley Area and other locations across Pennsylvania can be found at the EPA’s AirNow Interactive Map.
* For information on the Air Quality Index (AQI) and the health effects of ozone and PM-2.5, visit the EPA’s AirNow AQI & Health webpage.
June 4, 2024, Harrisburg, PA – The Pennsylvania Department of Environmental Protection has forecast a Code ORANGE Air Quality Action Day for ozone for Tuesday, June 4, 2024, for the Lehigh-Berks and Susquehanna valley areas in Pennsylvania. This includes the counties of Lancaster, Lehigh, Northampton, Berks, Cumberland, Dauphin, Lebanon, and York. Mostly sunny skies and temperatures […]
DEP Declares Statewide Code Orange Air Quality Action Day for Fine Particulate Matter for July 17, 2023
Harrisburg, PA – The Pennsylvania Department of Environmental Protection (DEP) has declared a statewide Code Orange Air Quality Action Day for fine particulate matter July 17, 2023, in Pennsylvania.
Smoke from wildfires is expected to impact Pennsylvania air quality throughout the day and will likely contribute to daily average concentrations of fine particulate matter in the Code Orange range on Monday. On an hourly basis, a number of locations may see a rise in concentrations that are at levels in the lower end of the Code Red/Unhealthy range for several hours. Residents are encouraged to check www.airnow.gov for current conditions in their area.
On a Code Orange Air Quality Action Day, young children, the elderly, and those with respiratory problems, such as asthma, emphysema, and bronchitis, are especially vulnerable to the effects of air pollution and should limit outdoor activities.
DEP Declares Code Orange Air Quality Action Day for Ozone for July 6, 2023 in Lehigh Valley-Berks Area and Susquehanna Valley Area
| A(n) Air Quality Action Day has been declared for Susquehanna Valley Area, PA, on Thursday, Jul 6 | ||||
|---|---|---|---|---|
| Tomorrow’s Forecast | ||||
| Thursday, Jul 6: | 101 AQI | Unhealthy for Sensitive Groups |  | Ozone |
| 60 AQI | Moderate |  | Particle Pollution (2.5 microns) | |
* This air quality forecast was prepared by the Pennsylvania Department of Environmental Protection (DEP).
* Current air quality monitoring data for the Susquehanna Valley Area and other locations across Pennsylvania can be found at the EPA’s AirNow Interactive Map.
| A(n) Air Quality Action Day has been declared for Susquehanna Valley Area, PA, on Thursday, Jun 29 | ||||
|---|---|---|---|---|
| Tomorrow’s Forecast | ||||
| Thursday, Jun 29: | 178 AQI | Unhealthy |  | Particle Pollution (2.5 microns) |
| 85 AQI | Moderate |  | Ozone | |
| Extended Forecast | ||||
| Friday, Jun 30: | 100 AQI | Moderate | | Particle Pollution (2.5 microns) |
| 93 AQI | Moderate | | Ozone | |
Current Conditions as of 2 PM on Wednesday: A departing area of low pressure and an area of high pressure building over the region have created conditions that are transporting smoke southward from wildfires in eastern Canada into the region. As a result, air quality conditions have become quite poor across the area since early this morning. Unfortunately, unhealthy levels of air quality will continue Thursday and at least early Friday before unsettled weather returns to help at least temporarily improve conditions through the weekend. *** Thursday’s Forecast: Wildfire smoke will continue to blanket the region on Thursday leading to another day with unhealthy levels of air quality. Warmer air lifting northward aloft will contribute to the development of another overnight temperature inversion. How strong this inversion becomes will be dependent on how cool overnight temperatures at the surface become. High pressure will provide minimal cloud cover which is typically favorable for better radiational cooling during the overnight hours. A layer of wildfire smoke, however, can sometimes act like a blanket of cloud cover over the region, thus limiting that radiational cooling to some degree. Whether it is a strong inversion or weak inversion that develops tonight, the result will still be unhealthy levels of air quality with concentrations of fine particulate matter (PM-2.5) remaining elevated. Winds look to be light for the day so even after the temperature inversion breaks during the morning hours mixing will be very limited. A CODE RED Air Quality Action Day is declared for Thursday for PM-2.5 due to smoke from the Canadian wildfires. * Current air quality monitoring data for the Susquehanna Valley Area and other locations across Pennsylvania can be found at the EPA’s AirNow Interactive Map. |
