Air Quality
2.9/5
21.3 µg/m³Sensitive Groups
Air Quality Profile
Nakhon Si Thammarat reports an annual PM2.5 of 21.3 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Nakhon Si Thammarat
Thailand
ThailandAnnual Average
ModerateWHO annual classification
21.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2727 µg/m³ — Poor
2020 µg/m³ — Moderate
2323 µg/m³ — Moderate
2323 µg/m³ — Moderate
2424 µg/m³ — Moderate
2020 µg/m³ — Moderate
2121 µg/m³ — Moderate
1515 µg/m³ — Fair
2121 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
2727 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
2727 µg/m³ — Poor
2020 µg/m³ — Moderate
2323 µg/m³ — Moderate
2323 µg/m³ — Moderate
2424 µg/m³ — Moderate
2020 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
2121 µg/m³ — Moderate
1515 µg/m³ — Fair
2121 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
2727 µg/m³ — Poor
Best months: Aug, Oct–NovWorst months: Jan, May, Dec
Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
Air Quality Profile
Nakhon Si Thammarat reports an annual PM2.5 of 21.3 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Nakhon Si ThammaratThailand
ThailandAnnual Average
ModerateWHO annual classification
21.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2727 µg/m³ — Poor
2020 µg/m³ — Moderate
2323 µg/m³ — Moderate
2323 µg/m³ — Moderate
2424 µg/m³ — Moderate
2020 µg/m³ — Moderate
2121 µg/m³ — Moderate
1515 µg/m³ — Fair
2121 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
2727 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
2727 µg/m³ — Poor
2020 µg/m³ — Moderate
2323 µg/m³ — Moderate
2323 µg/m³ — Moderate
2424 µg/m³ — Moderate
2020 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
2121 µg/m³ — Moderate
1515 µg/m³ — Fair
2121 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
2727 µg/m³ — Poor
Best months: Aug, Oct–NovWorst months: Jan, May, Dec
Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
Who thrives in Nakhon Si Thammarat
Things to consider in Nakhon Si Thammarat
PM2.5 annual average of 21.3 µg/m³ exceeds the WHO interim target of 15 µg/m³. The WHO guideline value is 5 µg/m³.
Data sources: WHO (air quality), OECD (safety).
Why not Nakhon Si Thammarat?
Why not Nakhon Si Thammarat? Honestly, air quality could be better — Nakhon Si Thammarat's 21.3 µg/m³ annual PM2.5 is above WHO guidelines, though still within ranges common for larger cities.
Frequently asked about Nakhon Si Thammarat
▶How many sunny days does Nakhon Si Thammarat have per year?
Nakhon Si Thammarat averages approximately 208 sunny days per year, based on historical climate data.
▶What is the air quality in Nakhon Si Thammarat?
Nakhon Si Thammarat has an annual PM2.5 concentration of 21.3 µg/m³, classified as "Moderate" by WHO standards. Above WHO targets. Some respiratory effects possible with prolonged exposure.