Air quality · Alabama
Air quality in Alabama
Across the 3 Alabama ZIPs with EPA county air-quality data, the median day ranges from Good to Moderate (median AQI 44–52). No day in those counties reached Unhealthy in 2025. This is a 2025 county annual summary, not a live reading.
Last verified 2026-09-24 · methodology
Air quality by ZIP code in Alabama
EPA's 2025 annual summary for each ZIP's county. Median AQI is the typical day; lower is cleaner.
| ZIP | Median AQI | Good days | Unhealthy or worse |
|---|---|---|---|
| 35203BirminghamJefferson County | 52 Moderate | 159 of 365 | 0 |
| 36104MontgomeryMontgomery County | 44 Good | 229 of 359 | 0 |
| 35223Mountain BrookJefferson County | 52 Moderate | 159 of 365 | 0 |
| 36830Auburn (AL)Lee County | No data |
County-level figures from EPA Air Quality System (AQS), annual county summary, joined to each ZIP by county. None of them is a measurement at a specific address.
What lands here
Pages show the 2025 median AQI category (Good, Moderate, Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, Hazardous) for the ZIP's county, plus the year's max/90th-percentile AQI and day-count breakdown by category.
Source & refresh
EPA Air Quality System (AQS), annual county summary. Refreshed annual (epa aqs publication). Primary source →
Alabama top concern
Tornado risk + rural water systems
Alabama sits in Dixie Alley with peak tornado activity in March-April. Coastal Mobile/Baldwin counties also carry FEMA-mapped storm-surge zones. Many rural water systems serve <500 connections, making EPA SDWIS compliance variability higher than in metro counties.
See Alabama state page for the full state-level rollup across all 12 dimensions.
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