Air quality comparison · Iran, 58 km apart
Borūjerd vs Khorramabad Air quality index (AQI) today
Khorramabad has cleaner air than Borūjerd right now: AQI 18 (Good) against 57 (Moderate).
That puts them in different EPA bands, so the health advice differs today. But over the past 7 days, on modeled daily averages, Borūjerd averaged AQI 54 against 63, and it was the cleaner of the two on 7 of those days. Borūjerd has more tree cover.
Iran
AQI 57
Moderate
Cleaner right now
- PM2.5
- 14 µg/m³
- Main pollutant
- PM2.5
- Source
- Model estimate
- Reading
- Nov 10, 21:30 local
Iran
AQI 18
Good
Cleaner right now
- PM2.5
- 3.1 µg/m³
- Main pollutant
- PM2.5
- Source
- Model estimate
- Reading
- Nov 10, 16:30 local
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Borūjerd57Khorramabad18
Head to head
Borūjerd vs Khorramabad at a glance
Borūjerd is ahead on 3 of 5 measures, and Khorramabad on 2. The better figure in each row is marked.
| Borūjerd | Khorramabad | |
|---|---|---|
| Air quality nowUS AQI. Lower is better. | 57 | 18 (better) |
| PM2.5Fine particles, µg/m³. | 14 | 3.1 (better) |
| Past week's averageUS AQI, 7 days. | 54 (better) | 63 |
| Tree coverWithin 2 km of the center. | 6.9% (better) | 6.0% |
| Trees still neededTo reach a healthy canopy. | 72.6K (better) | 75.4K |
Air quality today
What is the air like in Borūjerd and Khorramabad right now?
Khorramabad has cleaner air than Borūjerd right now: AQI 18 (Good) against 57 (Moderate). PM2.5 is setting the index in both.
Both readings are model estimates, with no ground station close enough to either.
BorūjerdKhorramabad
Concentrations at the same moment as the index above, for the pollutants both places report. Lower is better. The dark marks on the PM2.5 and PM10 rows show the WHO's 24-hour guidelines (15 and 45 µg/m³).
Borūjerd: Model estimate · no ground station nearby. Data: Open-Meteo / CAMS, US EPA index.
Khorramabad: Model estimate · no ground station nearby. Data: Open-Meteo / CAMS, US EPA index.
The past week
Which had cleaner air over the past 7 days?
But over the past 7 days, on modeled daily averages, Borūjerd averaged AQI 54 against 63, and it was the cleaner of the two on 7 of those days. A single reading can catch a city on a bad afternoon; the week says whether it was the weather or the place.
- Cleaner days
- Borūjerd7Khorramabad0
- Average AQI
- Borūjerd54Khorramabad63
- Worst day, AQI
- Borūjerd70Khorramabad76
The daily numbers (7 days)
| Day | Borūjerd | Khorramabad |
|---|---|---|
| Nov 4 | 51 | 58 |
| Nov 5 | 49 | 59 |
| Nov 6 | 62 | 70 |
| Nov 7 | 70 | 76 |
| Nov 8 | 53 | 63 |
| Nov 9 | 44 | 55 |
| Nov 10 | 52 | 58 |
Daily averages from the CAMS atmospheric model for both places, so the week compares like with like. They can differ from today's reading at the top of the page wherever that comes from a ground station.
What it means today
Is it safe to go outside in Borūjerd and Khorramabad today?
Borūjerd (AQI 57, Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Khorramabad (AQI 18, Good): Air quality is satisfactory for everyone.
Exercise outdoors
- Borūjerd
- Fine for most people; unusually sensitive people should take long or hard exercise easier.
- Khorramabad
- A good day to be active outside.
Windows
- Borūjerd
- Fine to open; close them if you are sensitive to pollution.
- Khorramabad
- Open them to air the house.
Masks
- Borūjerd
- Not needed for most people.
- Khorramabad
- Not needed.
Air purifier
- Borūjerd
- Worth running if you are sensitive.
- Khorramabad
- Not needed.
Against everywhere else
How do Borūjerd and Khorramabad compare with the rest of the world?
Right now Borūjerd's air is cleaner than 51% of the 5,420 places Airleaf tracks, and Khorramabad's is cleaner than 90%. Within Iran, that is 49% and 92% of its 97 measured places.
Cleaner air than…
- Borūjerd
- Beats 51%
- Khorramabad
- Beats 90%
More tree cover than…
- Borūjerd
- Beats 14%
- Khorramabad
- Beats 12%
Includes model estimates as well as station readings, so it can differ from our most polluted and cleanest air rankings, which use station readings only.
Satellite timelapses
Watch both change, year by year
A clear satellite photo a year of the land around each city. Press play, turn on the forest cleared since the first year, or drag the before and after.
Borūjerd
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
Khorramabad
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
Trees
Which has more trees, Borūjerd or Khorramabad?
Borūjerd has more tree cover: 6.9% of the land within 2 km of its center against 6.0% around Khorramabad, or about 21,677 trees against 18,850.
The dark mark is each place's canopy target: 30% of the land, raised where air quality is poor.
| Borūjerd | Khorramabad | |
|---|---|---|
| Trees standingEstimated from the canopy area. | 21.7K (better) | 18.9K |
| Trees still neededTo reach the target. Fewer is better. | 72.6K (better) | 75.4K |
| CO₂ absorbed each yearBy the trees already standing. | 477K kg (better) | 415K kg |
Tree cover on the satellite image
The same 2 km radius around each center, with the tree cover the satellite found marked on it.
Reading these numbers
How this comparison is made
Air quality index
The US EPA index, computed from current pollutant concentrations: ground stations where a place has them nearby, and the CAMS atmospheric model everywhere else. It moves hour to hour, so it is a snapshot rather than a verdict on either place. The guideline marks are from the WHO's 2021 air quality guidelines.
Trees and forest
Tree cover is the share of ground under canopy within 2 km of each center, read from Sentinel-2 satellite imagery at 10 m detail. It measures that circle, not the whole municipality, which is what makes the two comparable. Forest loss comes from the University of Maryland's Global Forest Change maps.
More on the method on the About Airleaf page.
Frequently asked
Borūjerd vs Khorramabad: your questions answered
Is Khorramabad cleaner than Borūjerd?
On air quality, yes, right now: Khorramabad reads AQI 18 against 57, a gap of 39 points on the US EPA index. This is a live reading rather than an annual average, so it can reverse within a day. But over the past 7 days, on modeled daily averages, Borūjerd averaged AQI 54 against 63, and it was the cleaner of the two on 7 of those days.
Is it safe to exercise outdoors in Borūjerd and Khorramabad today?
In Borūjerd, at AQI 57: Unusually sensitive people should consider limiting long outdoor exertion. In Khorramabad, at AQI 18: Air quality is satisfactory for everyone.
Which has more trees, Borūjerd or Khorramabad?
Borūjerd has more tree cover: 6.9% of the land within 2 km of its center against 6.0% around Khorramabad, or about 21,677 trees against 18,850. Both figures describe the same-sized circle of ground around each center, not the whole municipality.
How many more trees do Borūjerd and Khorramabad need?
Borūjerd needs about 72,571 more to reach its canopy target of 30%, and Khorramabad about 75,398 to reach 30%. The target starts at 30% of the land and rises where air quality is poor.
Why can two places 58 km apart read differently?
Air changes over short distances with traffic, industry, wind and hills, and each reading comes from the nearest ground stations or, where there are none, from a regional model. A gap of a few points between neighbors is within normal variation, while a gap that crosses an EPA band is worth noticing.
Are Borūjerd and Khorramabad measured the same way?
The method is the same: the US EPA index for air, and Sentinel-2 satellite imagery at 10 m detail over an identical radius for trees. Both readings are model estimates, with no ground station close enough to either. Nothing is adjusted for population, city limits or climate.
How often does the Borūjerd vs Khorramabad comparison update?
The air readings refresh about once an hour, and each reading's local time is shown at the top of the page. Tree cover comes from the latest clear satellite image of each area (Sep 26, 2026 and Sep 26, 2026), and the forest figures are published yearly.
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