Honolulu Air Quality in June
Across 2019–2025, Honolulu's June air quality had a median AQI of 25 (Good) over 210 monitored days in the Urban Honolulu, HI area. 0.0% of June days (0 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 69.5% of days. The cleanest June on record here was 2021 (median AQI 22, 0 days above 100) and the worst was 2024 (median 30, 0 days above 100, peak AQI 50).
- Good: 99.5%
- Moderate: 0.5%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Honolulu in June?
Good on a typical day: median AQI 25 across 2019–2025, with 0.0% of June days above AQI 100. Ground-level ozone is the main driver.
- ✓99.5% of June days were Good (AQI 0–50), 0.5% Moderate (51–100).
- ✓0 days of 210 reached AQI 101+; the June peak was 52.
- ✓Best June: 2021; worst June: 2024.
Frequently asked questions
What is the air quality like in Honolulu in June?▾
Across 2019–2025, the median daily AQI in Honolulu in June was 25 (Good). 99.5% of days were Good, 0.5% Moderate, and 0.0% 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 Honolulu?▾
A typical June day in Honolulu sits in the Good range (median AQI 25), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of June days reached AQI 101+ in 2019–2025.
Which pollutant causes Honolulu's June air quality problems?▾
Ground-level ozone set the daily AQI on 69.5% of June days in Honolulu. The highest June AQI recorded in 2019–2025 was 52 (Moderate), in 2024.
Honolulu June air quality, year by year
Honolulu June air quality by year (Urban Honolulu, HI, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 25 | 0 | 35 | O3 |
| 2020 | 30 | 24 | 0 | 36 | O3 |
| 2021cleanest | 30 | 22 | 0 | 30 | O3 |
| 2022 | 30 | 25 | 0 | 52 | O3 |
| 2023 | 30 | 26 | 0 | 37 | O3 |
| 2024worst | 30 | 30 | 0 | 50 | PM2.5 |
| 2025 | 30 | 25 | 0 | 38 | O3 |
What June air means in Honolulu
A typical June day in Honolulu sits in the Good range (median AQI 25), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of June days reached AQI 101+ in 2019–2025.
June's median AQI of 25 is below Honolulu's whole-year median of 29, 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 Honolulu runs below the national June norm; 0.0% of its June days topped AQI 100 versus 3.7% nationally (below average).
June is part of Honolulu's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Honolulu
The latest EPA AirNow observation puts Honolulu's AQI at 15 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Honolulu air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Urban Honolulu, HI), 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.