Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality near Castle Hill Road, Redwood City
Air quality index (AQI) and PM2.5 air pollution near Castle Hill Road, Redwood City
57 people follow this station
Air Quality Map
Real-time Castle Hill Road air pollution map
AIR QUALITY DATA CONTRIBUTORS
Find out more about contributors and data sourcesPollen
What is the pollen count in Castle Hill Road today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather near Castle Hill Road, Redwood City?
| Weather | Broken clouds |
| Temperature | 59°F |
| Humidity | 87% |
| Wind | 4 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Mecca, California | 77 |
| 2 | Corpus Christi, Texas | 75 |
| 3 | Palm Desert, California | 63 |
| 4 | Baton Rouge, Louisiana | 62 |
| 5 | Dover, Delaware | 60 |
| 6 | Gardena, California | 59 |
| 7 | La Habra, California | 59 |
| 8 | Quakertown, Pennsylvania | 59 |
| 9 | Wilmington, Delaware | 59 |
| 10 | Coopersburg, Pennsylvania | 58 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live aqi station ranking
Real-time Redwood City air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Sanchez Way | 26 |
| 2 | Ralston Road | 22 |
| 3 | Emerald Hillbillies | 17 |
| 4 | Maple Way | 17 |
| 5 | Stanford University Press | 17 |
| 6 | 125 Elwood Street | 16 |
| 7 | Bair Island | 16 |
| 8 | Arch Street | 15 |
| 9 | Chestnut Street 2 | 15 |
| 10 | Gossamer Hollow | 15 |
(local time)
SEE WORLD AQI RANKING
US AQI
46
live AQI index
Good
Overview
What is the current air quality near Castle Hill Road, Redwood City?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 46 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 11.2µg/m³ | |
Health Recommendations
What is the current air quality near Castle Hill Road, Redwood City?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Castle Hill Road, Redwood City air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, Aug 24 | Good 36 AQI US |  | 75.2° 55.4° |  6.7 mp/h |
| Thursday, Aug 25 | Good 14 AQI US |  | 73.4° 53.6° | 6.7 mp/h |
| Friday, Aug 26 | Good 17 AQI US | | 75.2° 53.6° | 6.7 mp/h |
| Saturday, Aug 27 | Good 15 AQI US | | 69.8° 53.6° | 8.9 mp/h |
| Sunday, Aug 28 | Good 17 AQI US | | 69.8° 51.8° | 8.9 mp/h |
| Monday, Aug 29 | Good 19 AQI US | | 73.4° 51.8° | 6.7 mp/h |
| Tuesday, Aug 30 | Good 18 AQI US | | 78.8° 55.4° | 6.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Castle Hill Road air quality data attribution
Contributor
Anonymous Contributor
Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Redwood City?
- Seabrook Court 3
- Ohio Avenue 5
- Star Hill Road 5
- Farm Hills 6
- Chatham Court 7
- Flower Street 7
- Palm Park 7
- Santa Clara Avenue at Barton Street 7
- 856 Chesterton 8
- Cerrito Avenue 8
- Columbia Avenue 9
- 29 Barcelona Circle 10
- Midpeninsula Regional Open Space District - SFO 10
- Arlington Road 11
- Bel Air Way 11
- Belle Roche Court 11
- Harvest Drive 11
- Keel Lane 11
- Myrtle Street 11
- Odessa Court 11
- Red Oak Way 11
- Redwood Oaks 2 11
- Vera Cash Market 11
- Vernal Way, Emerald Hills 11
- Vista Court 11
- 1617 Anamor Street 12
- Canyon Road 12
- Eden Bower Lane 12
- Laurel Way 12
- Palomar Park 12
- Redwood Oaks 12
- Roosevelt Avenue 12
- Sanchez Way 2 12
- Stony Hill Road 12
- Upland Road 12
- Vista Drive 12
- Waverly Avenue 12
- 18th Avenue RWC 13
- Vera Avenue 13
- Arch Street 15
- Chestnut Street 2 15
- Gossamer Hollow 15
- Hawes Right Field 15
- Hudson Street 15
- 125 Elwood Street 16
- Bair Island 16
- Emerald Hillbillies 17
- Maple Way 17
- Stanford University Press 17
- Ralston Road 22
- Sanchez Way 26
AQI US, Metric