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India > Rajasthan > Churu

Current Air Quality Index & Pollutant Levels

Rajasthan, India

Daily air quality forecast. PM2.5, PM10, O₃, NO₂, SO₂, CO.

Air Quality

78
Poor
European AQI
Main pollutant: PM10

Everyone may begin to experience health effects. Sensitive groups should avoid prolonged outdoor exertion. Keep windows closed.

02040608010012005010015020010:0016:0022:0004:0010:0016:0022:0004:0010:0016:0022:0004:0009:00
Hourly forecast
Now7829
11:007225
12:006721
13:006519
14:006517
15:006417
16:006417
17:006418
18:006019
19:006222
20:006324
21:006326
22:006328
23:006329
00:006329
01:006228
02:006227
03:006126
04:006126
05:006227
06:006229
07:006329
08:006126
09:006524
AQIPM2.5 μg/m³
PM2.5
28.5μg/m³
100% of WHO limit (15 μg/m³)
PM10
96.2μg/m³
100% of WHO limit (45 μg/m³)
Ozone (O₃)
132.3μg/m³
100% of WHO limit (100 μg/m³)
NO₂
2.2μg/m³
9% of WHO limit (25 μg/m³)
SO₂
7.8μg/m³
19% of WHO limit (40 μg/m³)
CO
251.2μg/m³
6% of WHO limit (4000 μg/m³)
Dust (AOD)
0.21AOD
Light Dust
Daily air quality forecast
Today65Poor6078
Sat64Poor6170
Sun92Very Poor76102
Mon78Poor60101
Tue55Moderate5159
European AQI Scale
0–20Good
21–40Fair
41–60Moderate
61–80Poor
81–100Very Poor
100+Hazardous

The European Air Quality Index ranges from 0 (best) to 100+ (worst). It combines measurements of particulate matter and gas pollutants into a single number.

HistoryPast 30 days
What are these pollutants?
PM2.5Fine particulate matter smaller than 2.5 micrometers. These particles are small enough to bypass the nose and throat, reaching deep into the lungs and even entering the bloodstream. Major sources include vehicle exhaust, industrial processes, and wildfires.
PM10Coarse particles smaller than 10 micrometers, including dust, pollen, and road surface wear. While larger than PM2.5, they still cause respiratory irritation and aggravate asthma.
O₃Ground-level ozone is not emitted directly — it forms when nitrogen oxides and volatile organic compounds react in sunlight. Higher in summer afternoons. Can trigger asthma attacks and reduce lung function.
NO₂Nitrogen dioxide comes primarily from vehicle engines and power plants. It inflames the lining of the airways, making the lungs more susceptible to infection.
SO₂Sulfur dioxide is released by burning fossil fuels containing sulfur, especially coal and oil. Even short exposure can constrict airways, particularly in people with asthma.
COCarbon monoxide is an odorless gas from incomplete combustion of fuels. Outdoors, it mainly comes from vehicle traffic. At elevated levels, it reduces the blood's ability to carry oxygen.
Dust (AOD)AOD at 550nm. Above 0.3 = Saharan dust.
Air Quality FAQ
What is the Air Quality Index?

The European AQI is a number from 0 to 100+ that summarizes how clean or polluted the air is. It combines measurements of fine particles (PM2.5, PM10) and gases (ozone, NO₂, SO₂) into a single score. The higher the number, the worse the air quality and the greater the health risk.

Who is most sensitive to air pollution?

Children, the elderly, pregnant women, and people with asthma, COPD, or heart disease are most vulnerable. Even moderate pollution levels (AQI 41–60) can trigger symptoms in these groups. Athletes and outdoor workers also face higher exposure due to increased breathing rates.

How can I protect myself?

On high-pollution days: stay indoors with windows closed, use air purifiers with HEPA filters, avoid strenuous outdoor exercise (especially near busy roads), and check the AQI forecast before planning activities. Even on moderate days, sensitive individuals should limit prolonged outdoor exertion.

When is air quality typically worst?

Ozone peaks on hot, sunny afternoons (summer). Particle pollution (PM2.5) is often worst in winter due to heating and temperature inversions that trap pollutants near the ground. Rush-hour traffic causes NO₂ spikes morning and evening. Dust events and wildfires can cause sudden, severe spikes any time of year.

Data: Copernicus CAMS · CC-BY-4.0