Note: Hover over datapoints on the graph for more information.

Daily AQI Table

Pollutant	04/24/25	04/25/25	04/26/25	04/27/25	04/28/25
Ozone	50	44	46	49	51
PM2.5	60	55	51	35	43

Synopsis and Discussion

Ozone levels continue to be limited by cloud cover and high dewpoints, but particle pollution remains elevated in the low to middle Code YELLOW range this afternoon. Particulates have accumulated ahead of an incoming cold front in the lower portion of the atmosphere, while also remaining trapped in the lower portion of the atmosphere due to cloud cover and isolated precipitation. Particle pollution is expected to remain elevated in the Code YELLOW range on Saturday until the cold front passes through the Triad tomorrow afternoon, when a drier and cooler Canadian high pressure ridge builds in from the north. Ozone levels will likely remain Code GREEN for the day, but could potentially see an increase in ozone production late afternoon once the front clears east of the Triad. Canadian high pressure is expected to keep the Triad drier and cooler Sunday and Monday, lowering particle pollution into the middle to upper Code GREEN range. However, ozone levels will likely trend upward as the ridge of high pressure begins to move offshore Monday afternoon, leading to low Code YELLOW AQI for the start of the work week. (Payne)

Click here to receive a copy of the Forecast Report via e-mail each day.

Air Monitoring Data

The Forsyth County Office of Environmental Assistance and Protection is making data available from the county's air monitoring network as a public service. These data represent the hourly data set from all of the sites within this network. Data from Triad sites outside of Forsyth County are collected by the North Carolina Division of Air Quality.

Reports

• Current Hourly Data
• Yesterday's Data & Calibration Report
• Simple Key for Reading Data File