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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
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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 | Scattered clouds |
| Temperature | 51.8°F |
| Humidity | 86% |
| Wind | 6.7 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Mecca, California | 94 |
| 2 | Claremont, California | 91 |
| 3 | Glendora, California | 86 |
| 4 | Glendale, California | 80 |
| 5 | San Fernando, California | 79 |
| 6 | San Bernardino, California | 78 |
| 7 | Coachella, California | 77 |
| 8 | La Verne, California | 77 |
| 9 | Pahrump, Nevada | 77 |
| 10 | Marina del Rey, California | 75 |
(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 | 78 |
| 2 | Antonio Court | 38 |
| 3 | Pescadero | 30 |
| 4 | San Francisquito Creek Road | 27 |
| 5 | 10 Alhambra Court | 23 |
| 6 | 14 Arastradero | 23 |
| 7 | Ladera - Lucero and Mimosa | 22 |
| 8 | Granada Court | 21 |
| 9 | Loop Road | 20 |
| 10 | Alpine Road | 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 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 27 AQI US | | 60.8° 50° | 11.2 mp/h |
| Today | Good 18 AQI US | | 60.8° 50° | 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 | | 60.8° 50° | 6.7 mp/h |
| Tuesday, Jun 4 | Good 34 AQI US | | 75.2° 50° | 8.9 mp/h |
| Wednesday, Jun 5 | Moderate 66 AQI US  | | 75.2° 53.6° | 4.5 mp/h |
| Thursday, Jun 6 | Good 40 AQI US | | 66.2° 51.8° | 6.7 mp/h |
| Friday, Jun 7 | Good 21 AQI US |  | 64.4° 50° | 6.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
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Portola Valley air quality data attribution
29Contributors
- 29 Anonymous contributors
29 stations
29 Anonymous Contributors
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Portola Valley?
- Alpine Hills 0
- Ash Lane 1
- Coalmine View 1
- Georgia Lane 6
- Bay Laurel 8
- Thomas Fogarty Winery 8
- Hayfields Road 13
- Experimental Facilities Dept Shops EFD 15
- Pomponio Court 16
- 3249 Alpine Road 17
- 4139 Alpine Road 17
- 9 Valley Oak Street 18
- Alhambra Court 18
- Buck Meadow Drive 18
- LSAC Building 950 18
- Sandstone Street 18
- Alpine Road 19
- Los Trancos Road 19
- Millennium farm 19
- Sausal Drive 19
- Loop Road 20
- Granada Court 21
- Ladera - Lucero and Mimosa 22
- 10 Alhambra Court 23
- 14 Arastradero 23
- San Francisquito Creek Road 27
- Pescadero 30
- Antonio Court 38
- Lower Sandstone 78
AQI US, Metric