Tacoma Air Quality in June
Across 2019–2025, Tacoma's June air quality had a median AQI of 42 (Good) over 210 monitored days in the Seattle-Tacoma-Bellevue, WA area. 2.4% of June days (5 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 59.0% of days. The cleanest June on record here was 2019 (median AQI 39, 0 days above 100) and the worst was 2021 (median 42, 2 days above 100, peak AQI 177).
- Good: 78.6%
- Moderate: 19.0%
- Unhealthy for Sensitive Groups: 1.0%
- Unhealthy or worse: 1.4%
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How is the air in Tacoma in June?
Good on a typical day: median AQI 42 across 2019–2025, with 2.4% of June days above AQI 100. Ground-level ozone is the main driver.
- ✓78.6% of June days were Good (AQI 0–50), 19.0% Moderate (51–100).
- ✓5 days of 210 reached AQI 101+; the June peak was 177.
- ✓Best June: 2019; worst June: 2021.
Frequently asked questions
What is the air quality like in Tacoma in June?▾
Across 2019–2025, the median daily AQI in Tacoma in June was 42 (Good). 78.6% of days were Good, 19.0% Moderate, and 2.4% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is June a good time for outdoor exercise in Tacoma?▾
A typical June day in Tacoma sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 42 of June days (2.4%) reached AQI 101+ in 2019–2025.
Which pollutant causes Tacoma's June air quality problems?▾
Ground-level ozone set the daily AQI on 59.0% of June days in Tacoma. The highest June AQI recorded in 2019–2025 was 177 (Unhealthy), in 2021.
Tacoma June air quality, year by year
Tacoma June air quality by year (Seattle-Tacoma-Bellevue, WA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 30 | 39 | 0 | 66 | PM2.5 |
| 2020 | 30 | 37 | 1 | 155 | O3 |
| 2021worst | 30 | 42 | 2 | 177 | O3 |
| 2022 | 30 | 42 | 1 | 115 | O3 |
| 2023 | 30 | 45 | 1 | 112 | PM2.5 |
| 2024 | 30 | 44 | 0 | 77 | O3 |
| 2025 | 30 | 44 | 0 | 77 | O3 |
What June air means in Tacoma
A typical June day in Tacoma sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 42 of June days (2.4%) reached AQI 101+ in 2019–2025.
June's median AQI of 42 is below Tacoma's whole-year median of 49, making it one of the area's cleaner periods. Nationally, the median June AQI across every EPA metro area (100,635 metro-days, 2019–2025) is 46, so Tacoma runs below the national June norm; 2.4% of its June days topped AQI 100 versus 3.7% nationally (below average).
June is part of Tacoma's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Tacoma
The latest EPA AirNow observation puts Tacoma's AQI at 41 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Tacoma air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Seattle-Tacoma-Bellevue, WA), 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.