Primary Pollutant

(AQI)

San Francisco GOOD aqi boy San Francisco GOOD aqi boy San Francisco GOOD aqi boy

San Francisco Air Quality Index (AQI) | United States

Real-time PM2.5, PM10 air pollution level California

Last Update: 18 Mar 2024, 07:05pm

San Francisco GOOD aqi boy San Francisco GOOD aqi boy San Francisco GOOD aqi boy

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Comparative Exposure with San Francisco

24 hrs avg AQI

San Francisco

United States

Major Air Pollutants in San Francisco

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Carbon-mono-oxide icon
200 (CO)

PM2.5

The current PM2.5 concentration in San Francisco is ✓below the recommended limit given by the WHO 24 hrs air quality guidelines value.

San Francisco - Locations Air Pollution Level

LOCATIONS Status AQI-US AQI-IN PM2.5 PM10 Temp Humid
San Francisco Arkansas Street GOOD 42 20 10 0 14 84

Weather Conditions in San Francisco

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What are the weather and climatic conditions in San Francisco?
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Temperature icon
˚C | ˚F

Local Time

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Sunrise
Sunset
06:26 AM
06:26 PM
Wind Speed Icon

Wind speed

33 km/h

UV Index Icon

UV Index

16

Pressure Icon

Pressure

800 mb


Health Advice For San Francisco

How to protect yourself from air pollution around San Francisco, United States?
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Wear Mask

Not Required
stay indoors icon cross

Stay Indoor

Not Required
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Windows

Keep Close
use a purifier icon

Use Purifier

Not Required
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Family

Allow Outdoor

San Francisco Air Quality Forecast



Day

AQI

Weather


Temp.


Today

134

AQI

1st day weather condition icon


Friday

134

AQI

2nd day weather condition icon


Saturday

134

AQI

3rd day weather condition icon


Sunday

134

AQI

4th day weather condition icon


Monday

134

AQI

5th day weather condition icon


Tuesday

134

AQI

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Wednesday

134

AQI

7th day weather condition icon



San Francisco

AQI Calendar

0-50
Good
51-100
Moderate
101-200
Poor
201-300
Unhealthy
301-400
Severe
401-500
Hazardous

Most Polluted Cities in United States

Least Polluted Cities in United States


Comparative Exposure with San Francisco

24 hrs avg AQI

San Francisco

United States



FAQs of San Francisco Air Quality Index

(Frequently Asked Questions)


Quick answers to some commonly asked questions about the air pollution of San Francisco.


The real-time air quality in San Francisco is 20 (GOOD) AQI now. This was last updated 4 hours ago .

The current concentration of PM2.5 in San Francisco is 10 (µg/m³). The World Health Organisation (WHO) recommends 15 µg/m³ as the threshold concentration of PM2.5 for 24 hrs mean. Currently, the concentration is 0.40 times the recommended limit.

Generally, the air quality at San Francisco starts deteriorating in late October. The winters are the worst-hit season in terms of air pollution.

You should wear a good N95 mask when you go outdoor in San Francisco until the AQI is improving upto moderate range.

Office going people should avoid personal vehicles and use public transportations or carpooling.

(i) The primary causes of outdoor air pollution are solid, liquid particles called aerosols & gase from vehicles emissions, construction activities, factories, burning stubble & fossil fuels and wildfire, etc.


(ii) Main causes of indoor air pollution are harmful gases from cooking fuels (such as wood, crop wastes, charcoal, coal and dung), damp, mould smoke, chemicals from cleaning materials, etc.

Indoor air pollution in San Francisco is as dangerous as outdoor pollution, because the air pollutants come inside the houses or buildings through doors, windows and ventilation.

In San Francisco , you must use an air purifier or fresh air machine at home or office indoor and close all the doors, windows and ventilations when the outdoor air quality index (aqi) in San Francisco is very high. Proper ventilation is highly recommended only when outdoor air quality is improving and moderate AQI range.




World's Most Polluted Cities & Countries AQI Ranking

Real-time top most polluted cities, and monthly & annual historic AQI ranking of cities & countries

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San Francisco AIR POLLUTION

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Know what you breathe and the quality of air in your city and nearby locations. Real-time AQI, map, weather & fire data, health advice with insightful & anlytical dasbboards.

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