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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 | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Moderate | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Portola Valley?
| Weather | Clear sky |
| Temperature | 62.6°F |
| Humidity | 70% |
| Wind | 2 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Boerne, Texas | 96 |
| 2 | Austin, Texas | 86 |
| 3 | New Braunfels, Texas | 84 |
| 4 | Georgetown, Texas | 81 |
| 5 | Round Rock, Texas | 81 |
| 6 | San Antonio, Texas | 81 |
| 7 | Cedar Park, Texas | 77 |
| 8 | Leander, Texas | 76 |
| 9 | San Fernando, California | 70 |
| 10 | Hollywood, California | 66 |
(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 | 3249 Alpine Road | 55 |
| 3 | 4139 Alpine Road | 53 |
| 4 | Antonio Court | 41 |
| 5 | 14 Arastradero | 29 |
| 6 | LSAC Building 950 | 26 |
| 7 | San Francisquito Creek Road | 25 |
| 8 | 10 Alhambra Court | 24 |
| 9 | Ladera - Lucero and Mimosa | 23 |
| 10 | Los Trancos Road | 23 |
(local time)
SEE WORLD AQI RANKING
US AQI
21
live AQI index
Good
Overview
What is the current air quality in Portola Valley?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 21 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 3.8µg/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 |  | 68° 48.2° | 11.2 mp/h |
| Today | Good 21 AQI US | | 64.4° 51.8° | 8.9 mp/h |
| Sunday, Jun 2 | Good 20 AQI US | | 60.8° 50° | 6.7 mp/h |
| Monday, Jun 3 | Good 34 AQI US | | 71.6° 50° | 11.2 mp/h |
| Tuesday, Jun 4 | Moderate 60 AQI US  | | 75.2° 53.6° | 8.9 mp/h |
| Wednesday, Jun 5 | Good 41 AQI US | | 68° 51.8° | 6.7 mp/h |
| Thursday, Jun 6 | Good 35 AQI US | | 68° 50° | 8.9 mp/h |
| Friday, Jun 7 | Good 28 AQI US | | 68° 50° | 6.7 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 2
- Georgia Lane 13
- Alpine Hills 15
- Pescadero 16
- Alpine Road 17
- Hayfields Road 17
- Ash Lane 19
- Bay Laurel 19
- Experimental Facilities Dept Shops EFD 19
- Loop Road 19
- Alhambra Court 20
- Buck Meadow Drive 20
- Millennium farm 20
- Pomponio Court 20
- 9 Valley Oak Street 21
- Sausal Drive 21
- Granada Court 22
- Sandstone Street 22
- Ladera - Lucero and Mimosa 23
- Los Trancos Road 23
- 10 Alhambra Court 24
- San Francisquito Creek Road 25
- LSAC Building 950 26
- 14 Arastradero 29
- Antonio Court 41
- 4139 Alpine Road 53
- 3249 Alpine Road 55
- Lower Sandstone 61
AQI US, Metric