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 Portola Valley
Air quality index (AQI) and PM2.5 air pollution in Portola Valley
4.7K people follow this city
Portola Valley Air Quality Map
Real-time Portola Valley air pollution map
AIR QUALITY DATA CONTRIBUTORS
Anonymous contributor
See all
Pollen
What is the pollen count in Portola Valley today?
 | Index | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Moderate | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Portola Valley?
| Weather | Broken clouds |
| Temperature | 59°F |
| Humidity | 69% |
| Wind | 7.3 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Mecca, California | 102 |
| 2 | Corpus Christi, Texas | 100 |
| 3 | Coachella, California | 95 |
| 4 | San Bernardino, California | 86 |
| 5 | Pahrump, Nevada | 84 |
| 6 | North Hollywood, California | 83 |
| 7 | Redlands, California | 80 |
| 8 | San Fernando, California | 79 |
| 9 | Glendale, California | 78 |
| 10 | Yucaipa, California | 78 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Portola Valley aqi ranking
Real-time Portola Valley air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Lower Sandstone | 56 |
| 2 | 14 Arastradero | 35 |
| 3 | San Francisquito Creek Road | 28 |
| 4 | 4139 Alpine Road | 27 |
| 5 | 10 Alhambra Court | 26 |
| 6 | Granada Court | 26 |
| 7 | Alhambra Court | 25 |
| 8 | Ladera - Lucero and Mimosa | 25 |
| 9 | Pescadero | 25 |
| 10 | Pomponio Court | 25 |
(local time)
SEE WORLD AQI RANKING
US AQI
23
live AQI index
Good
Overview
What is the current air quality in Portola Valley?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 23 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.2µg/m³ | |
✓
PM2.5 concentration in Portola Valley air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Portola Valley?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Portola Valley air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 29 | Good 28 AQI US |  | 82.4° 50° |  8.9 mp/h |
| Thursday, May 30 | Good 31 AQI US | | 78.8° 48.2° | 6.7 mp/h |
| Friday, May 31 | Good 26 AQI US | | 60.8° 48.2° | 11.2 mp/h |
| Today | Good 23 AQI US | | 60.8° 48.2° | 11.2 mp/h |
| Sunday, Jun 2 | Good 36 AQI US | | 62.6° 51.8° | 8.9 mp/h |
| Monday, Jun 3 | Good 20 AQI US | | 62.6° 50° | 6.7 mp/h |
| Tuesday, Jun 4 | Good 34 AQI US | | 73.4° 48.2° | 8.9 mp/h |
| Wednesday, Jun 5 | Moderate 66 AQI US  | | 77° 53.6° | 6.7 mp/h |
| Thursday, Jun 6 | Good 40 AQI US | | 66.2° 51.8° | 8.9 mp/h |
| Friday, Jun 7 | Good 21 AQI US | | 68° 50° | 8.9 mp/h |
Interested in hourly forecast? Get the app
How to best protect from air pollution?
Portola Valley air quality data attribution
27Contributors
- 27 Anonymous contributors
27 stations
27 Anonymous Contributors
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Portola Valley?
- Ash Lane 1
- Coalmine View 1
- Georgia Lane 10
- Hayfields Road 16
- Bay Laurel 17
- Alpine Hills 19
- Experimental Facilities Dept Shops EFD 20
- 3249 Alpine Road 21
- Alpine Road 21
- Buck Meadow Drive 22
- Loop Road 22
- Millennium farm 22
- 9 Valley Oak Street 23
- Sandstone Street 23
- Sausal Drive 23
- LSAC Building 950 24
- Los Trancos Road 24
- Alhambra Court 25
- Ladera - Lucero and Mimosa 25
- Pescadero 25
- Pomponio Court 25
- 10 Alhambra Court 26
- Granada Court 26
- 4139 Alpine Road 27
- San Francisquito Creek Road 28
- 14 Arastradero 35
- Lower Sandstone 56
AQI US, Metric