Honolulu Air Quality in February
Across 2019–2025, Honolulu's February air quality had a median AQI of 35 (Good) over 198 monitored days in the Urban Honolulu, HI area. 0.0% of February days (0 of 198) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 73.7% of days. The cleanest February on record here was 2022 (median AQI 31, 0 days above 100) and the worst was 2023 (median 39, 0 days above 100, peak AQI 55).
- Good: 97.0%
- Moderate: 3.0%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Honolulu
Today's main pollutant in Honolulu is ground-level ozone (AQI 28). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How is the air in Honolulu in February?
Good on a typical day: median AQI 35 across 2019–2025, with 0.0% of February days above AQI 100. Ground-level ozone is the main driver.
- ✓97.0% of February days were Good (AQI 0–50), 3.0% Moderate (51–100).
- ✓0 days of 198 reached AQI 101+; the February peak was 56.
- ✓Best February: 2022; worst February: 2023.
Frequently asked questions
What is the air quality like in Honolulu in February?▾
Across 2019–2025, the median daily AQI in Honolulu in February was 35 (Good). 97.0% of days were Good, 3.0% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 198 monitored days in EPA's Air Quality System.
Is February a good time for outdoor exercise in Honolulu?▾
A typical February day in Honolulu sits in the Good range (median AQI 35), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of February days reached AQI 101+ in 2019–2025.
Which pollutant causes Honolulu's February air quality problems?▾
Ground-level ozone set the daily AQI on 73.7% of February days in Honolulu. The highest February AQI recorded in 2019–2025 was 56 (Moderate), in 2023.
Honolulu February air quality, year by year
Honolulu February air quality by year (Urban Honolulu, HI, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 28 | 38 | 0 | 48 | O3 |
| 2020 | 29 | 36 | 0 | 43 | O3 |
| 2021 | 28 | 34 | 0 | 43 | O3 |
| 2022cleanest | 28 | 31 | 0 | 40 | O3 |
| 2023worst | 28 | 39 | 0 | 55 | PM2.5 |
| 2024 | 29 | 36 | 0 | 42 | O3 |
| 2025 | 28 | 34 | 0 | 56 | O3 |
What February air means in Honolulu
A typical February day in Honolulu sits in the Good range (median AQI 35), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of February days reached AQI 101+ in 2019–2025.
February's median AQI of 35 is above Honolulu's whole-year median of 29, making it one of the area's dirtier periods. Nationally, the median February AQI across every EPA metro area (87,428 metro-days, 2019–2025) is 41, so Honolulu runs below the national February norm; 0.0% of its February days topped AQI 100 versus 0.4% nationally (about the same).
February is part of Honolulu's winter season (December, January, February); the winter 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 28 (O3). 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.