Daily County-Level PM2.5 Concentrations from 2001 to 2022

2001-2022 modeled predictions of PM2.5 levels from the EPA's Downscaler model. The dataset is provided at the county level and is used by the CDC's National Environmental Public Health Tracking Network. Columns include statefips, countyfips, date, year, and several predicted concentration metrics.

Use Cases

• Analyzing long-term PM2.5 trends using the year and pm25_mean_pred columns.
• Mapping county-level air quality disparities using statefips, countyfips, and pm25_med_pred.
• Modeling population exposure to air pollution by integrating pm25_pop_pred with demographic data.
• Assessing annual variation in peak pollution events using year and pm25_max_pred.

Strengths

• Covers a 22-year time range from 2001 to 2022.
• Provides data at the county level for detailed spatial analysis.
• Includes multiple prediction metrics such as mean, median, max, and population-weighted PM2.5.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Data are modeled predictions; accuracy depends on the EPA Downscaler model.

Provenance

Source

EPA Downscaler model, distributed via CDC's National Environmental Public Health Tracking Network.

Collection Method

Modeled predictions.

Time Range

2001-2022

Freshness

Last updated 2026-04-14 13:35:54; freshness should be verified.

Geography

County-level data for the United States.