Redwood City, San Mateo, California AQI: Redwood City, San Mateo, California Real-time Air Quality Index (AQI). |
42 | Good Updated on Wed. 19:00 temperature: 19°C |
| current | past 2 days | min | max | |
PM2.5 AQI | 42 | 21 | 59 | |
O3 AQI | 20 | 10 | 22 | |
NO2 AQI | - | 1 | 6 | |
CO AQI | - | 2 | 3 | |
Temp. | 19 | 11 | 28 | |
Pressure | 1014 | 1013 | 1016 | |
Humidity | 68 | 47 | 91 | |
Wind | 0 | 0 | 1 | |
Air Quality Forecast

Air Quality Data provided by: CARB - California Air Resources Board (arb.ca.gov) and Air Now - US EPA (airnow.gov)
Do you know of any Air Quality stations in your area? why not participate to the map with your own air quality station?
> aqicn.org/gaia/ <
Share: “How polluted is the air today? Check out the real-time air pollution map, for more than 100 countries.”
Share: “Redwood City, San Mateo, California, California Air Quality is Good - on Wednesday, Jul 1st 2026, 19:00 pm”
Cloud API
This air quality monitoring station real-time data can be programmatically accessed using this API url: (For more information, check the API page:aqicn.org/api/ or aqicn.org/data-platform/api/H3901)







