Wednesday, July 11: Ozone – Code YELLOW Fine Particulates (PM 2.5) – Code ORANGE Air Quality Action Day Yesterday’s Regional Maximum Ozone and PM 2.5 Concentrations: Monday, July 9: Ozone – ORANGE (111 AQI or 89 ppb at Freemansburg) PM 2.5 – N/A Short-Term Discussion: Today will be another hot and hazy day with temperatures … Continue reading
Saturday June 16, 2007: Ozone (O3) – Code GREEN Fine Particulates (PM 2.5) – Code GREEN Sunday June 17, 2007: Ozone (O3) – Code YELLOW Fine Particulates (PM 2.5) – Code YELLOW Monday June 18, 2007: Ozone (O3) – Code YELLOW Fine Particulates (PM 2.5) – Code YELLOW Regional Maximum PM 2.5 Concentrations: Thursday, June … Continue reading
Wednesday, June 13: Ozone – Code GREEN Fine Particulates (PM 2.5) – Code GREEN Yesterday’s Regional Maximum Ozone and PM 2.5 Concentrations: Monday, June 11: Ozone – GREEN (34 AQI or 43 ppb) PM 2.5 – GREEN (50 AQI or 15.5 µg/m3) Short-Term Discussion: Currently, overcast conditions prevail across much of the region as we … Continue reading
Thursday, June 8, 2007: Fine Particulates (PM 2.5) – Code YELLOW Ozone (O3) – Code YELLOW Regional Maximum PM 2.5 Concentrations: Tuesday, June 6, 2007: PM 2.5 – GREEN (27 AQI or 8.2 µg/m3) O3 – GREEN (30 AQI or 38 ppb) Short-Term Discussion: Right now we are experiencing some really mild temperatures and low … Continue reading
Date: Monday, June 4, 2007 Action Day?: No Temperature: Mid 70s Discussion: Lingering clouds and showers for Monday; rain may be heavy at times. Afternoon temperatures should reach the mid 70s. Rain showers should limit Monday’s fine particulate and ozone concentrations to the code GREEN (good) range with fine-particulate concentrations possibly ranging a bit higher. … Continue reading
Saturday June 2, 2007: Ozone (O3) – Code YELLOW Fine Particulates (PM 2.5) – Code YELLOW Sunday June 3, 2007: Ozone (O3) – Code GREEN Fine Particulates (PM 2.5) – Code YELLOW Monday June 4, 2007: Ozone (O3) – Code GREEN Fine Particulates (PM 2.5) – Code GREEN Regional Maximum PM 2.5 Concentrations: Thursday, May … Continue reading
The Lehigh Valley/Berks Area Air Quality Forecast for: Friday May 25, 2007: Ozone (O3) – Code YELLOW Fine Particulates (PM 2.5) – Code YELLOW Regional Maximum PM 2.5 Concentrations: Wednesday, May 23, 2007: PM 2.5 – GREEN (43 AQI or 13.3 µg/m3) O3 – YELLOW (61 AQI or 69 ppb) Short-Term Discussion: Clear skies and … Continue reading
Date: Thursday, March 8, 2007 Action Day?: No Temperature: Mid 30s Discussion: High pressure building across the Mississippi Valley will make for a generally quiet and breezy day on Thursday. Northwesterly winds will kick up during the afternoon and become gusty at times before relaxing towards the evening hours. The northwest flow will keep skies fair with partly … Continue reading
Even colder air will work across the Northeast early Tuesday morning behind the continued strong, northwesterly winds. Morning lows in the low to mid teens will struggle to reach the mid 20s despite nearly brilliant sunshine for much of the day. Fine particulate levels will fall further into the code GREEN range due to the … Continue reading
Particle pollution (also known as “particulate matter”) in the air includes a mixture of solids and liquid droplets. Some particles are emitted directly; others are formed in the atmosphere when other pollutants react. Particles come in a wide range of sizes. Those less than 10 micrometers in diameter are so small that they can get … Continue reading
