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Air quality in Portola Valley
Air quality index (AQI) and PM2.5 air pollution in Portola Valley
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Portola Valley Air Quality Map
Real-time Portola Valley air pollution map
AIR QUALITY DATA CONTRIBUTORS
Anonymous contributor
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Pollen
What is the pollen count in Portola Valley today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Portola Valley?
| Weather | Clear sky |
| Temperature | 68°F |
| Humidity | 69% |
| Wind | 1 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Indio, California | 82 |
| 2 | Corpus Christi, Texas | 80 |
| 3 | The Woodlands, Texas | 71 |
| 4 | San Fernando, California | 68 |
| 5 | San Gabriel, California | 67 |
| 6 | Glendale, California | 66 |
| 7 | Houston, Texas | 66 |
| 8 | Monrovia, California | 66 |
| 9 | Altadena, California | 65 |
| 10 | Lancaster, Pennsylvania | 65 |
(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 | 61 |
| 2 | 4139 Alpine Road | 52 |
| 3 | Antonio Court | 51 |
| 4 | LSAC Building 950 | 26 |
| 5 | 14 Arastradero | 24 |
| 6 | Ash Lane | 21 |
| 7 | San Francisquito Creek Road | 21 |
| 8 | 9 Valley Oak Street | 20 |
| 9 | Experimental Facilities Dept Shops EFD | 20 |
| 10 | Buck Meadow Drive | 19 |
(local time)
SEE WORLD AQI RANKING
US AQI
18
live AQI index
Good
Overview
What is the current air quality in Portola Valley?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 18 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 3.3µg/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 15 | Good 18 AQI US |  | 69.8° 50° |  6.7 mp/h |
| Thursday, May 16 | Good 9 AQI US | | 69.8° 50° | 6.7 mp/h |
| Friday, May 17 | Good 12 AQI US | | 68° 48.2° | 8.9 mp/h |
| Friday, May 17 | Good 22 AQI US | | 68° 48.2° | 8.9 mp/h |
| Today | Good 18 AQI US | | 62.6° 46.4° | 8.9 mp/h |
| Sunday, May 19 | Good 32 AQI US | | 64.4° 44.6° | 8.9 mp/h |
| Monday, May 20 | Good 41 AQI US | | 69.8° 48.2° | 8.9 mp/h |
| Tuesday, May 21 | Good 49 AQI US |  40% | 59° 50° | 11.2 mp/h |
| Wednesday, May 22 | Good 25 AQI US | | 62.6° 46.4° | 11.2 mp/h |
| Thursday, May 23 | Good 20 AQI US | | 60.8° 50° | 8.9 mp/h |
| Friday, May 24 | Good 16 AQI US | 20% | 60.8° 48.2° | 8.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Portola Valley air quality data attribution
28Contributors
- 28 Anonymous contributors
28 stations
28 Anonymous Contributors
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Portola Valley?
- Coalmine View 1
- Alpine Road 10
- Bay Laurel 12
- Hayfields Road 12
- Pescadero 12
- Georgia Lane 15
- Alhambra Court 16
- Pomponio Court 16
- Sausal Drive 16
- Alpine Hills 17
- Loop Road 17
- Sandstone Street 17
- Vista Verde Way 17
- 10 Alhambra Court 18
- Los Trancos Road 18
- Buck Meadow Drive 19
- Granada Court 19
- Ladera - Lucero and Mimosa 19
- Millennium farm 19
- 9 Valley Oak Street 20
- Experimental Facilities Dept Shops EFD 20
- Ash Lane 21
- San Francisquito Creek Road 21
- 14 Arastradero 24
- LSAC Building 950 26
- Antonio Court 51
- 4139 Alpine Road 52
- Lower Sandstone 61
AQI US, Metric