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Around the World in 80 Air Quality Sensors – Monrovia, Liberia (Stop #4) – guided by Local Haze

In the book “Around the World in 80 days”, the protagonist Phileas Fogg of London UK and his French valet Passepartout attempt to circumnavigate the world in 80 days on a £20,000 wager (roughly £2 million today).

Inspired by Phileas and Passepartout’s global travels, join us as we take a world tour through the lens of air quality monitoring guided by the Local Haze air quality monitoring app. We are taking a worldwide tour highlighting 80 AQI sensors around the globe, checking out how citizen scientists and air quality enthusiasts are monitoring their local air quality. 

Our first stop was in London UK at Victoria station. We then travelled eastward for stop #2 on our tour to the Porto in northern Portugal and then on to Dakar, Senegal, West Africa. Today for stop #4 we visit Monrovia, Liberia to check out the local air quality.

Around the World in 80 Air Quality Sensors - Monrovia, Liberia (Stop #4) - guided by Local Haze

Stop #4: Monrovia, Liberia

Founded in 1822, Monrovia is the capital city of the West African country of Liberia. Monrovia is located on Cape Mesurado on the Atlantic coast. Monrovia’s economy is primarily centered on its harbor and its role as the seat of Liberia’s government.

Monrovia is Liberia’s most populous city and as of the 2022 census, Monrovia’s current metro area population is 1,623,000, a 3.44% increase from 2021.

Monrovia’s climate

Monrovia has a tropical monsoon climate and is the wettest capital city in the world. Annual rainfall averages 4,624 mm (182.9 inches). Temperatures in Monrovia are constant throughout the year, averaging around 26.4 °C (79.5 °F). Monrovia has both wet and dry seasons, though it gets precipitation during the dry season. 

Air Quality sensor #4: Monrovia, 6431

For stop #4 on our Local Haze tour, we visit an air quality sensor located in Monrovia, a PurpleAir monitor named Monrovia, 6431. On October 1, 2022, the Local Haze AQI reading for sensor Monrovia, 6431 was 21, with a PM2.5 concentration of 2.80 micrograms/m^3 (micrograms per cubic meter).  According to the U.S. Environmental Protection Agency’s Air Quality Index (AQI), this reading for the AQ sensor Monrovia, 6431 is considered “Good”.

Local Haze air quality for Monrovia, Liberia
Photo credit: blk24ga (CC BY 3.0)

Moving on to the next AQ sensor

To visit the next AQ sensor in our trip, we will depart Monrovia and continue our travels east – like Phileas Fogg – across the globe, visiting sensors until we return to our starting point in London. 

Join us as we travel to the next AQ sensor by following Local Haze on Facebook, Twitter and Instagram. Use the hashtag #ATW80AQ to join in the conversation and share your thoughts. Find your local air quality free by downloading the Local Haze app. Bon voyage!

About Local Haze

The Local Haze app is available for free download from the Apple App Store and monitors over 30,000 civic and low-cost air quality sensors over six continents.

Download Local Haze on the Apple Store