| Aalo | |
| Native Name: | Aalo |
| Settlement Type: | District Headquarters |
| Pushpin Map: | India Arunachal Pradesh#India3 |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Arunachal Pradesh, India |
| Coordinates: | 28.17°N 94.77°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Arunachal Pradesh |
| Subdivision Type2: | District |
| Subdivision Name2: | West Siang district |
| Established Date: | 1948 |
| Government Type: | Multi Party democracy |
| Leader Title1: | Deputy Commissioner |
| Leader Name1: | Shri Penga Tato, APCS |
| Unit Pref: | Metric |
| Elevation M: | 295 |
| Population Total: | 20680 |
| Population As Of: | 2011 |
| Population Rank: | 4 (in AP) |
| Population Density Km2: | 13 |
| Population Footnotes: | [1] |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | English |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 791 001 |
| Area Code Type: | Telephone code |
| Area Code: | 91 3783 XXX XXXX |
| Registration Plate: | AR-08 |
| Blank1 Name Sec2: | Climate |
| Blank1 Info Sec2: | Cfa (Köppen) |
| Blank2 Name Sec2: | Precipitation |
| Blank2 Info Sec2: | 2477mm |
| Blank3 Name Sec2: | Avg. annual maximum temperature |
| Blank3 Info Sec2: | 28.1°C |
| Blank4 Name Sec2: | Avg. annual minimum temperature |
| Blank4 Info Sec2: | 15.3°C |
| Blank6 Name Sec2: | Avg. summer temperature |
| Blank6 Info Sec2: | 24.7°C |
| Blank5 Name Sec2: | Avg. winter temperature |
| Blank5 Info Sec2: | 18.5°C |
Aalo, formerly Along, is a census town and headquarter of the West Siang district district of the Indian state of Arunachal Pradesh. It is located from Likabali, which is at the border of Assam and Arunachal Pradesh.
It is also an Advance Landing Ground (ALG) of Indian Air Force.
Mopin is the main festival that runs from 5 to 6 April. The Yomgo River Festival, held every year during peak tourist season, and lasting 3–4 days, is celebrated from 05-9 April. This festival is celebrated with a view to promote tourism, indigenous culture, and tradition, handloom & handicrafts and showcase its rich cultural heritage.
,[2] Along had a population of 16,834. Males constitute 56% of the population and females 44%. Aalo has an average literacy rate of 69%, higher than the national average of 59.5%; with 75% of the males and 61% of females literate. 15% of the population is under 6 years of age. The low sex ratio – 916 girls for every 1000 boys in 2001 – is cause for concern, even though it is not typical of the region.
In 2011, its population was . The majority of Aalo's(formerly Along) population consists of Galo people and Galo is the main languages but a huge population of Adi consists at Aalo Town. The major religion is Donyi-Polo, followed by Christianity and small minorities of followers of Tibetan Buddhism, Hinduism and Islam.
According to 2011 census, Adi was the most spoken language with 11,199 speakers followed by Hindi at 3,572, Bengali at 1,128, Bhojpuri at 989, Nepali at 956 and Assamese at 781.
Aalo does not have a good road network and the road which runs from north Lakhimpur to the capital city of Itanagar, connects the town of Aalo to the city. Regular bus services to Aalo run from Itanagar. Arunachal Pradesh State Transport Service (APSTS) buses are available to and from Aalo. There is a 5 hours journey by bus from Pasighat to Aalo (106 km) while from Moying (150 km) the bus will take around 6.5 hours to reach Aalo.
The nearest airport to Aalo is at Pasighat. It is connected by flight services to Guwahati, Dibrugarh, Tezpur among others. One can take a bus or hire a taxi from Pasighat to Aalo.
Aalo has no railway and the nearest railway station is at Murkongselek. A new line which connects Aalo to Silapathar through broad gauge railway was proposed and the survey has already been completed and forwarded to the railway board.[3]
Along has an All India Radio Relay station known as Akashvani Along. It broadcasts on FM frequencies.