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Mashhad Sadaf Sulfur Dioxide (SO₂) Level

Mashhad, Khorasan e Razavi, Iran

Sulfur Dioxide (SO₂)

49ppb

Moderate

Last Updated: 2026-07-31 16:21:01 (Local Time)

Map

Mashhad Sadaf

Good

040

Moderate

Poor

380

Unhealthy

800

Severe

1600

Hazardous

2600+

What is the Current SO₂ Level?
Mashhad Sadaf

The current SO₂ level at Mashhad Sadaf is 49 ppb making it acceptable, but sensitive individuals should be cautious.

3.2xAbove

The current SO₂ level in Mashhad Sadaf is 3.2x Above the recommended WHO guideline of 15.27 ppb.

AQI Graph

Historic Air Quality Graph of Sulfur Dioxide (SO₂)
Mashhad Sadaf

24 Hours

SO₂

Mashhad Sadaf

SO₂ (ppb)

30-07-2026Time31-07-2026

Time	Mashhad Sadaf
4:31pm	40
5:01pm	43
5:31pm	46
6:01pm	48
6:31pm	44
7:01pm	56
7:31pm	69
8:01pm	70
8:31pm	2
9:01pm	1
9:31pm	76
10:01pm	74
10:31pm	82
11:01pm	46
11:31pm	42
12:01am	33
12:31am	35
1:01am	29
1:31am	26
2:01am	26
2:31am	23
3:01am	27
3:31am	10
4:01am	10
4:31am	11
5:01am	7
5:31am	7
6:01am	5
6:31am	5
7:01am	3
7:31am	5
8:01am	5
8:31am	2
9:01am	1
9:31am	1
10:01am	2
10:31am	2
11:01am	4
11:31am	4
12:01pm	13
12:31pm	29
1:01pm	30
1:31pm	37
2:01pm	40
2:31pm	52
3:01pm	48
3:31pm	49
4:01pm	54

Min. SO₂9:01pm

Max. SO₂10:31pm

Want air quality data?

Sulfur Dioxide (SO₂): Sulfur dioxide is the major component in acid rain as it easily dissolves in the water and forms sulfuric acid. And SO2 in acid rain can harm forests, crops, and aquatic ecosystems, change soil acidity, and deteriorate building materials and historical monuments.

Uncovering the Sources of Sulfur Dioxide (SO₂): Where Does It Come From?

Chemical manufacturing

The production processes that emit sulfur dioxide.

Industries

Emissions from manufacturing and industrial processes.

Power plants generation

Released during the burning of fossil fuels for electricity.

Petroleum Refineries

Emits from refining crude oil into various products.

Heavy-duty vehicles

Exhaust from trucks and buses using diesel fuel.

Short-Term SO₂ Exposure Impacts

Nose irritation

Discomfort in the nasal passages.

Throat and lung irritation

Inflammation and pain in the throat.

Coughing and phlegmz

Persistent cough and mucus production.

Asthma attacks

Triggering of asthma symptoms or existing asthma.

Wheezing

High-pitched whistling sound when breathing.

Why you should care about Sulfur Dioxide (SO₂)?

Know More About SO₂ Sensor

Air Quality FAQs
at Mashhad Sadaf

Frequently Asked Questions About Air Quality

1. What is the current SO₂ level in Mashhad Sadaf?

The current real-time SO₂ level in Mashhad Sadaf is 49ppb (Moderate). This was last updated 2026-07-31 16:21:01 (Local Time).

2. When was the best SO₂ level in Mashhad Sadaf in the last 24 hours?

The best SO₂ level was 1 ppb (Good) at 9:01 PM, Jul 30, 2026 (Local Time) during the last 24 hours.

3. When was the worst SO₂ level in Mashhad Sadaf in the last 24 hours?

The worst SO₂ level was 82 ppb (Poor) at 10:31 PM, Jul 30, 2026 (Local Time) during the last 24 hours.

4. What is the current trend of SO₂ levels in Mashhad Sadaf during last 24 hours?

The SO₂ levels in Mashhad Sadaf have been fluctuating throughout the last 24 hours. The levels have increased by highest 82 ppb at 10:31 PM, Jul 30, 2026 (Local Time), lowest 1 ppb at 9:01 PM, Jul 30, 2026 (Local Time).

5. What actions are recommended as per the current SO₂ level in Mashhad Sadaf?

Current SO₂ levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.