Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Foster City
Air quality index (AQI) and PM2.5 air pollution in Foster City
27.6K people follow this city
Foster City Air Quality Map
Real-time Foster City air pollution map
AIR QUALITY DATA CONTRIBUTORS
Anonymous contributor
See all
Pollen
What is the pollen count in Foster City today?
 | Index | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Foster City?
| Weather | Clear sky |
| Temperature | 53.6°F |
| Humidity | 79% |
| Wind | 10.4 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Mecca, California | 116 |
| 2 | Corpus Christi, Texas | 95 |
| 3 | The Woodlands, Texas | 82 |
| 4 | New Braunfels, Texas | 78 |
| 5 | Georgetown, Texas | 77 |
| 6 | Pahrump, Nevada | 77 |
| 7 | San Antonio, Texas | 77 |
| 8 | Boerne, Texas | 72 |
| 9 | Lewisville, Texas | 72 |
| 10 | Fort Worth, Texas | 71 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Foster City aqi ranking
Real-time Foster City air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Niantic Drive | 35 |
| 2 | Sea Spray Lane | 32 |
| 3 | Beach Park Boulevard | 29 |
| 4 | Ketch Park | 25 |
| 5 | Shad Park | 25 |
(local time)
SEE WORLD AQI RANKING
US AQI
29
live AQI index
Good
Overview
What is the current air quality in Foster City?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 29 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5.3µg/m³ | |
!
PM2.5
x1.1
PM2.5 concentration in Foster City is currently 1.1 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Foster City?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Foster City air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Saturday, May 18 | Good 24 AQI US |  | 64.4° 48.2° |  8.9 mp/h |
| Sunday, May 19 | Good 27 AQI US | | 68° 48.2° | 6.7 mp/h |
| Monday, May 20 | Good 30 AQI US | | 69.8° 50° | 8.9 mp/h |
| Today | Good 29 AQI US | | 69.8° 50° | 8.9 mp/h |
| Wednesday, May 22 | Good 47 AQI US | | 64.4° 50° | 11.2 mp/h |
| Thursday, May 23 | Good 41 AQI US | | 62.6° 48.2° | 13.4 mp/h |
| Friday, May 24 | Good 28 AQI US | | 64.4° 48.2° | 11.2 mp/h |
| Saturday, May 25 | Good 22 AQI US |  20% | 59° 48.2° | 11.2 mp/h |
| Sunday, May 26 | Good 16 AQI US | | 64.4° 46.4° | 8.9 mp/h |
| Monday, May 27 | Good 20 AQI US | | 64.4° 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?
Foster City air quality data attribution
5Contributors
- 5 Anonymous contributors
5 stations
5 Anonymous Contributors
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Foster City?
AQI US, Metric