Air Quality in Diamond Head / Kapahulu / Saint Louis Heights, United States

Windy
24.8°C · 72.7% humidity
24.8°
Feels 24.8°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
27 9am
27
34
23 12pm
26
28
23 3pm
24
23
24 6pm
26
26
26 9pm
25
25
25 12am
25
25
27 3am
27
34
34 6am
34
34
AD 728×90

Air Quality Index Trend

44h · 1 stn

Diamond Head / Kapahulu / Saint Louis Heights's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Diamond Head / Kapahulu / Saint Louis Heights is 1.1× the WHO annual guideline of 5 µg/m³.

72.7%
Humidity
147.6 km/h
Wind ENE
1015.5 hPa
Pressure
29.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
23
5.44 µg/m³
PM10▲
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Diamond Head / Kapahulu / Saint Louis Heights?

Temperature & Precipitation

PM2.5 Trend

44h · 1 station
PM2.55.44 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX29.9
Extreme
AD 300×250
Station readings (3 stations within 25 km)
5.44
Median
5.93
Average
3.4
Low
10.1
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +1.9

What is the 7-day forecast for Diamond Head / Kapahulu / Saint Louis Heights?

05-28
25.2° 23.7°
0.75 mm
05-29
24.8° 23.6°
1.13 mm
05-30
24.7° 23.5°
0.75 mm
05-31
25.2° 23.6°
1.81 mm
06-01
24.8° 24.1°
1.25 mm
06-02
25.0° 23.6°
1.25 mm
06-03
25.0° 23.5°
1.13 mm
Both models agree Avg diff: 0.5°C

Where are air quality stations near Diamond Head / Kapahulu / Saint Louis Heights?

21
Honolulu, Hawaii, USA
5.7 km PM2.5: 5.0 µg/m³
15
Sand Island, Hawaii, USA
6.9 km PM2.5: 3.6 µg/m³

What cities are near Diamond Head / Kapahulu / Saint Louis Heights?

23 Kaimukī 22 Waikīkī 21 Mō‘ili‘ili 21 McCully - Moiliili 22 Manoa 20 Makiki / Lower Punchbowl / Tantalus 22 Ala Moana - Kakaʻako 17 Honolulu 23 Kuliouou - Kalani Iki 22 Nuuanu - Punchbowl
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T22:56 UTC.