Mobile, Alabama Air Quality Today
AirHistory tracks long-run EPA monitoring rather than live readings, so for the live number check AirNow.gov below. As a baseline, Mobile, Alabama's most recent EPA year (2023) posted a median AQI of 46 (Good) against a 5-year median of 49 and an overall Grade of C. The dominant pollutant is Fine Particulate Matter (PM2.5), which tells you which days are most likely to spike.
Check Today's Live AQI in Mobile, Alabama
AirHistory is built on 10 years of EPA Air Quality System records, so it shows you what air quality in Mobile, Alabama typically looks like — not the live reading for this exact hour. For today's real-time AQI, check AirNow.gov (the EPA's official live index) or the AirNow Fire and Smoke Map during wildfire season.
That said, the history is the best predictor of a normal day. In 2023, Mobile, Alabama posted a median AQI of 46 (Good), with 203 "Good" days and 1 days that crossed into "Unhealthy for Sensitive Groups" or worse. The dominant pollutant, Fine Particulate Matter (PM2.5), is the one most likely to push today's number up — Fine particulate matter — particles less than 2.5 micrometers across — comes mostly from combustion: vehicle exhaust, wildfire smoke, residential wood burning, and industrial emissions. Because these particles are small enough to enter the bloodstream, PM2.5 is the pollutant most strongly linked to cardiovascular disease, respiratory illness, and premature death.
Mobile, Alabama Air Quality Snapshot
| Air Quality Grade | C60/100 |
| 5-Year Median AQI | 49 (Good) |
| Most Recent Median AQI (2023) | 46 (Good) |
| Dominant Pollutant | Fine Particulate Matter (PM2.5) |
| 10-Year Trend | Stable (+0.21 AQI/yr) |
| Unhealthy Days (last 5 yr) | 1 |
| National Rank (cleanest = #1) | #906 of 1,020 (89th most polluted percentile) |
| Alabama Rank | #15 of 17 |
What Does the C Grade Mean?
Mobile, Alabama earns a C — air quality is fair, but not great. With a 5-year median AQI of 49, the city sees a meaningful number of "Moderate" days each year, when the EPA flags air as a concern for unusually sensitive people.
Mobile, Alabama's 5-year median AQI of 49 is 8 points above the national average of 41 — meaningfully more polluted than the typical U.S. metro tracked here. Within Alabama, Mobile, Alabama runs more polluted than the state average of 41 — local sources or geography are concentrating pollution above the state's typical reading.
For context within Alabama: Tuscaloosa, Alabama currently holds the state's cleanest grade (A, AQI 37), while Madison, Alabama sits at the bottom (C, AQI 48).
What's in Mobile, Alabama's Air?
The dominant pollutant in Mobile, Alabama is Fine Particulate Matter (PM2.5). Fine particulate matter — particles less than 2.5 micrometers across — comes mostly from combustion: vehicle exhaust, wildfire smoke, residential wood burning, and industrial emissions. Because these particles are small enough to enter the bloodstream, PM2.5 is the pollutant most strongly linked to cardiovascular disease, respiratory illness, and premature death.
Days by Dominant Pollutant (2023)
| Pollutant | Days as Dominant | Share of Year |
|---|---|---|
| Fine Particulate Matter (PM2.5) | 257 | 71% |
| Ground-Level Ozone | 96 | 27% |
| Coarse Particulate Matter (PM10) | 8 | 2% |
Is the Air Getting Better or Worse?
Air quality in Mobile, Alabama has held roughly steady over the past decade, with year-to-year shifts in median AQI of less than half a point. That stability makes the city's long-run grade a reliable signal of what residents can expect day-to-day.
In 2014, Mobile, Alabama posted a median AQI of 43. By 2023 that figure was 46 — a rise of 3 AQI points dirtier across 10 years of EPA records.
Year-by-Year AQI in Mobile, Alabama
| Year | Median AQI | Good Days | Unhealthy Days | Dominant Pollutant |
|---|---|---|---|---|
| 2014 | 43 | 206 | 6 | Ozone |
| 2015 | 48 | 192 | 1 | PM2.5 |
| 2016 | 51 | 179 | 2 | PM2.5 |
| 2017 | 43 | 250 | 5 | PM2.5 |
| 2018 | 44 | 218 | 1 | PM2.5 |
| 2019 | 52 | 167 | 0 | PM2.5 |
| 2020 | 49 | 188 | 0 | PM2.5 |
| 2021 | 53 | 125 | 0 | PM2.5 |
| 2022 | 44 | 235 | 0 | PM2.5 |
| 2023 | 46 | 203 | 1 | PM2.5 |
Health Context for Mobile, Alabama
Across the past five years, this area has logged just 1 days where AQI rose into the "Unhealthy for Sensitive Groups" range or worse — about 0 days per year, or roughly one every other month. That is a low count by national standards.
Healthy adults can continue normal outdoor activity in most weather, but should pay attention to AQI alerts during the worst pollution windows. People with asthma, heart disease, or pregnancy should reduce prolonged or intense outdoor exertion on flagged days, and consider running an indoor HEPA air cleaner during peak season. Because PM2.5 penetrates deep into the lungs and bloodstream, an N95 or KN95 mask provides meaningful protection on smoky or high-particulate days — surgical masks do not.
How This Grade Is Calculated
The AirHistory Air Quality Grade combines four signals: the 5-year median AQI (40% of the score), the 10-year trend direction (30%), the count of unhealthy days per year (20%), and the dominant pollutant type (10%). All four come directly from the EPA Air Quality System (AQS), which aggregates readings from federally certified monitors. Read the full methodology.
More about Mobile, Alabama
Mobile, Alabama has an Air Quality Grade of C (fair) with a 5-year median AQI of 49. The dominant pollutant is Fine Particulate Matter (PM2.5), and air quality has been stable over the past decade.
This answer pulls from the EPA Air Quality System (AQS), the authoritative federal source for U.S. air quality and pollution monitoring. The headline number above is the direct answer; what follows is the additional context most readers need to use the answer for a real decision rather than just a fact lookup.
A practical caveat: the headline answer above reflects the most recent the EPA Air Quality System (AQS) vintage; underlying data is often revised for months after first publication, and the right reference for any specific decision is whichever vintage is current at the time of the decision. The as-of date is stamped on every page.
Source: EPA Outdoor Air Quality Data, 2026.