Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Half Moon Bay
Air quality index (AQI) and PM2.5 air pollution in Half Moon Bay
23.3K people follow this city
Half Moon Bay Air Quality Map
Real-time Half Moon Bay air pollution map
AIR QUALITY DATA CONTRIBUTORS
13 Contributors
See all
Pollen
What is the pollen count in Half Moon Bay today?
 | Index | Low | |
 | Tree pollen | None | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Half Moon Bay?
| Weather | Mist |
| Temperature | 48.2°F |
| Humidity | 88% |
| Wind | 8.1 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Palm Desert, California | 95 |
| 2 | Marana, Arizona | 90 |
| 3 | Mecca, California | 90 |
| 4 | Corpus Christi, Texas | 82 |
| 5 | New Braunfels, Texas | 81 |
| 6 | San Antonio, Texas | 78 |
| 7 | Maricopa, Arizona | 77 |
| 8 | Boerne, Texas | 74 |
| 9 | Cleveland, Ohio | 73 |
| 10 | Redlands, California | 72 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Half Moon Bay aqi ranking
Real-time Half Moon Bay air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Terrace Ave | 52 |
| 2 | Sand Dunes Court | 46 |
| 3 | Alsace Lorraine Avenue | 37 |
| 4 | The Tree House | 36 |
| 5 | Kelly Avenue-Cunha Intermediate Outside | 35 |
| 6 | Coronado Avenue | 31 |
| 7 | Half Moon Bay High School Outside | 30 |
| 8 | Le Mans Way | 26 |
| 9 | 480 Tunitas Creek Road | 19 |
| 10 | Bayhill Road | 19 |
(local time)
SEE WORLD AQI RANKING
US AQI
30
live AQI index
Good
Overview
What is the current air quality in Half Moon Bay?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 30 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5.4µg/m³ | |
!
PM2.5
x1.1
PM2.5 concentration in Half Moon Bay is currently 1.1 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Half Moon Bay?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Half Moon Bay air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Friday, May 17 | Good 10 AQI US |  | 62.6° 50° |  11.2 mp/h |
| Saturday, May 18 | Good 29 AQI US |  | 62.6° 50° | 11.2 mp/h |
| Sunday, May 19 | Good 32 AQI US |  | 57.2° 48.2° | 11.2 mp/h |
| Today | Good 30 AQI US | | 57.2° 48.2° | 11.2 mp/h |
| Tuesday, May 21 | Good 38 AQI US | | 60.8° 50° | 8.9 mp/h |
| Wednesday, May 22 | Good 47 AQI US | | 57.2° 50° | 15.7 mp/h |
| Thursday, May 23 | Good 42 AQI US | | 55.4° 50° | 20.1 mp/h |
| Friday, May 24 | Good 31 AQI US |  20% | 57.2° 50° | 13.4 mp/h |
| Saturday, May 25 | Good 42 AQI US | 30% | 55.4° 50° | 13.4 mp/h |
| Sunday, May 26 | Good 17 AQI US | | 57.2° 50° | 11.2 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Half Moon Bay air quality data attribution
13Contributors
- Terrace 500
1 station
Individual Contributor
- 12 Anonymous contributors
12 stations
12 Anonymous Contributors
Data validated and calibrated by IQAirWhere is the cleanest air quality in Half Moon Bay?
AQI US, Metric