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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 | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
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 | Big Bear Lake, California | 123 |
| 2 | Cockeysville, Maryland | 86 |
| 3 | Arroyo Grande, California | 81 |
| 4 | Arlington, Virginia | 76 |
| 5 | Nipomo, California | 76 |
| 6 | San Antonio, Texas | 75 |
| 7 | Alexandria, Virginia | 73 |
| 8 | Ashburn, Virginia | 73 |
| 9 | Frederick, Maryland | 73 |
| 10 | Mecca, California | 70 |
(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 | 64 |
| 2 | Antonio Court | 25 |
| 3 | 14 Arastradero | 19 |
| 4 | 3249 Alpine Road | 18 |
| 5 | 4139 Alpine Road | 18 |
| 6 | LSAC Building 950 | 18 |
| 7 | 9 Valley Oak Street | 16 |
| 8 | Ladera - Lucero and Mimosa | 16 |
| 9 | San Francisquito Creek Road | 16 |
| 10 | Experimental Facilities Dept Shops EFD | 15 |
(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?
- Thomas Fogarty Winery 1
- Coalmine View 2
- Alpine Road 8
- Pescadero 8
- Hayfields Road 10
- Bay Laurel 11
- Georgia Lane 11
- Pomponio Court 11
- 10 Alhambra Court 12
- Ash Lane 12
- Alhambra Court 13
- Alpine Hills 13
- Buck Meadow Drive 13
- Granada Court 13
- Loop Road 13
- Sausal Drive 13
- Vista Verde Way 13
- Los Trancos Road 14
- Experimental Facilities Dept Shops EFD 15
- Millennium farm 15
- Sandstone Street 15
- 9 Valley Oak Street 16
- Ladera - Lucero and Mimosa 16
- San Francisquito Creek Road 16
- 3249 Alpine Road 18
- 4139 Alpine Road 18
- LSAC Building 950 18
- 14 Arastradero 19
- Antonio Court 25
- Lower Sandstone 64
AQI US, Metric