Tallahassee Best & Worst AQI Days: Air Quality Guide
The worst air quality day on record for Tallahassee (Tallahassee, FL area) was June 26, 2020, when the daily AQI reached 164 (Unhealthy), set by fine particulate matter (PM2.5), in wildfire smoke season. Across 2,552 monitored days in 2019–2025, 2 of the 10 worst days were Unhealthy (AQI 151+) or worse; 9 of the 10 were driven by fine particulate matter (PM2.5) and 1 by ground-level ozone, and 3 of them fell in 2020. The cleanest day was September 1, 2019 at AQI 14 (Good); the 10 best days span 5 different years.
Extra Protection for Tallahassee Homes
Air quality in Tallahassee is moderate (AQI 53), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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When were Tallahassee's worst and best air quality days?
Worst: June 26, 2020, AQI 164 (Unhealthy, PM2.5). Best: September 1, 2019, AQI 14 (Good). Based on 2,552 EPA-monitored days in the Tallahassee, FL area, 2019–2025.
- ✓2 of the 10 worst days were Unhealthy (AQI 151+) or worse; the 10th-worst was AQI 93 (Moderate).
- ✓Fine particulate matter (PM2.5) drove 9 of the 10 worst days.
- ✓2020 accounts for 3 of the 10 worst days.
Frequently asked questions
What was the worst air quality day in Tallahassee?▾
June 26, 2020: the Tallahassee, FL area's daily AQI hit 164 (Unhealthy), driven by fine particulate matter (PM2.5), in wildfire smoke season. That is the highest of 2,552 monitored days in 2019–2025.
What was the best air quality day in Tallahassee?▾
September 1, 2019, with a daily AQI of 14 (Good). The daily AQI is the highest reading from any monitor in the area, so even the cleanest day reflects the area's worst monitor.
What was Tallahassee's worst air quality day in 2025?▾
March 27, 2025, AQI 140 (Unhealthy for Sensitive Groups), set by fine particulate matter (PM2.5).
Which pollutant causes Tallahassee's worst air days?▾
Fine particulate matter (PM2.5) set the AQI on 9 of the 10 worst days; ground-level ozone on 1. The tables above list the defining pollutant for every day.
Tallahassee's 10 worst air quality days, 2019–2025
Highest daily AQI recorded for the Tallahassee, FL area (EPA AQS). The daily AQI is the highest reading from any monitor in the area that day.
| # | Date | AQI | Category | Defining pollutant |
|---|---|---|---|---|
| 1 | (2020 page) | 164 | Unhealthy | PM2.5 — fine particulate matter (PM2.5), in wildfire smoke season |
| 2 | (2020 page) | 155 | Unhealthy | PM2.5 — fine particulate matter (PM2.5), in wildfire smoke season |
| 3 | (2025 page) | 140 | Unhealthy for Sensitive Groups | PM2.5 — fine particulate matter (PM2.5) |
| 4 | (2024 page) | 139 | Unhealthy for Sensitive Groups | PM2.5 — fine particulate matter (PM2.5) |
| 5 | (2023 page) | 124 | Unhealthy for Sensitive Groups | PM2.5 — fine particulate matter (PM2.5), in wildfire smoke season |
| 6 | (2020 page) | 120 | Unhealthy for Sensitive Groups | PM2.5 — fine particulate matter (PM2.5), in wildfire smoke season |
| 7 | (2019 page) | 119 | Unhealthy for Sensitive Groups | O3 — ground-level ozone |
| 8 | (2024 page) | 99 | Moderate | PM2.5 — fine particulate matter (PM2.5) |
| 9 | (2022 page) | 97 | Moderate | PM2.5 — fine particulate matter (PM2.5) |
| 10 | (2025 page) | 93 | Moderate | PM2.5 — fine particulate matter (PM2.5) |
Worst day of each year in Tallahassee
The single highest-AQI day in each year on record. Click a year for its full month-by-month statistics.
| Year | Worst day | AQI | Category | Defining pollutant |
|---|---|---|---|---|
| 2019 | 119 | Unhealthy for Sensitive Groups | O3 — ground-level ozone | |
| 2020 | 164 | Unhealthy | PM2.5 — fine particulate matter (PM2.5), in wildfire smoke season | |
| 2021 | 81 | Moderate | PM2.5 — fine particulate matter (PM2.5) | |
| 2022 | 97 | Moderate | PM2.5 — fine particulate matter (PM2.5) | |
| 2023 | 124 | Unhealthy for Sensitive Groups | PM2.5 — fine particulate matter (PM2.5), in wildfire smoke season | |
| 2024 | 139 | Unhealthy for Sensitive Groups | PM2.5 — fine particulate matter (PM2.5) | |
| 2025 | 140 | Unhealthy for Sensitive Groups | PM2.5 — fine particulate matter (PM2.5) |
Tallahassee's 10 best air quality days, 2019–2025
Lowest daily AQI recorded for the Tallahassee, FL area. Ties are listed most recent first.
| # | Date | AQI | Category | Defining pollutant |
|---|---|---|---|---|
| 1 | (2019 page) | 14 | Good | O3 — ground-level ozone |
| 2 | (2021 page) | 17 | Good | PM2.5 — fine particulate matter (PM2.5) |
| 3 | (2019 page) | 17 | Good | O3 — ground-level ozone |
| 4 | (2025 page) | 19 | Good | O3 — ground-level ozone |
| 5 | (2022 page) | 20 | Good | O3 — ground-level ozone |
| 6 | (2025 page) | 21 | Good | O3 — ground-level ozone |
| 7 | (2023 page) | 21 | Good | O3 — ground-level ozone, in peak ozone season |
| 8 | (2023 page) | 21 | Good | O3 — ground-level ozone, in peak ozone season |
| 9 | (2021 page) | 21 | Good | PM2.5 — fine particulate matter (PM2.5) |
| 10 | (2019 page) | 21 | Good | O3 — ground-level ozone |
Right now in Tallahassee
The latest EPA AirNow observation puts Tallahassee's AQI at 53 (PM2.5). The days above are historical records, not today's reading.
View current Tallahassee air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Tallahassee, FL), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.