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Air quality near Old Spanish Trail, Portola Valley
Air quality index (AQI) and PM2.5 air pollution near Old Spanish Trail, Portola Valley
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Air Quality Map
Real-time Old Spanish Trail air pollution map
AIR QUALITY DATA CONTRIBUTORS
Find out more about contributors and data sourcesPollen
What is the pollen count in Old Spanish Trail today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Weather
What is the current weather near Old Spanish Trail, Portola Valley?
| Weather | Broken clouds |
| Temperature | 62.6°F |
| Humidity | 62% |
| Wind | 6 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Three Rivers, California | 85 |
| 2 | Lake Arrowhead, California | 77 |
| 3 | Springville, California | 70 |
| 4 | The Woodlands, Texas | 70 |
| 5 | San Gabriel, California | 69 |
| 6 | Yucaipa, California | 68 |
| 7 | Greensboro, North Carolina | 67 |
| 8 | Altadena, California | 64 |
| 9 | Monrovia, California | 64 |
| 10 | San Fernando, California | 64 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live aqi station ranking
Real-time Portola Valley air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Lower Sandstone | 65 |
| 2 | San Francisquito Creek Road | 35 |
| 3 | 14 Arastradero | 31 |
| 4 | 4139 Alpine Road | 30 |
| 5 | 3249 Alpine Road | 29 |
| 6 | LSAC Building 950 | 29 |
| 7 | Ladera - Lucero and Mimosa | 28 |
| 8 | Millennium farm | 28 |
| 9 | Alhambra Court | 27 |
| 10 | Granada Court | 27 |
(local time)
SEE WORLD AQI RANKING
US AQI
55
live AQI index
Moderate
Overview
What is the current air quality near Old Spanish Trail, Portola Valley?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 55 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 14µg/m³ | |
Health Recommendations
What is the current air quality near Old Spanish Trail, Portola Valley?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
Old Spanish Trail, Portola Valley air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, Mar 20 | Good 10 AQI US  | | 62.6° 44.6° |  4.5 mp/h |
| Thursday, Mar 21 | Good 16 AQI US |  90% | 60.8° 46.4° | 13.4 mp/h |
| Friday, Mar 22 | Good 13 AQI US | 100% | 50° 42.8° | 13.4 mp/h |
| Saturday, Mar 23 | Good 10 AQI US | 100% | 51.8° 42.8° | 11.2 mp/h |
| Sunday, Mar 24 | Good 13 AQI US | | 51.8° 41° | 8.9 mp/h |
| Monday, Mar 25 | Good 7 AQI US | 20% | 57.2° 41° | 6.7 mp/h |
| Tuesday, Mar 26 | Good 8 AQI US | 100% | 48.2° 41° | 15.7 mp/h |
| Wednesday, Mar 27 | Good 4 AQI US | 20% | 53.6° 41° | 6.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Old Spanish Trail air quality data attribution
Contributor
Anonymous Contributor
Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Portola Valley?
- Coalmine View 3
- Thomas Fogarty Winery 8
- Georgia Lane 13
- Alpine Hills 16
- Bay Laurel 16
- Pescadero 16
- Alpine Road 18
- Pomponio Court 19
- Ash Lane 21
- Hayfields Road 21
- Sandstone Street 21
- Sausal Drive 21
- Los Trancos Road 23
- Stonegate Road 23
- Vista Verde Way 23
- Buck Meadow Drive 24
- Experimental Facilities Dept Shops EFD 25
- Loop Road 25
- 10 Alhambra Court 26
- 9 Valley Oak Street 26
- Antonio Court 26
- Alhambra Court 27
- Granada Court 27
- Ladera - Lucero and Mimosa 28
- Millennium farm 28
- 3249 Alpine Road 29
- LSAC Building 950 29
- 4139 Alpine Road 30
- 14 Arastradero 31
- San Francisquito Creek Road 35
- Lower Sandstone 65
AQI US, Metric