Readings on 31 Jul 2015

View reading for:

Region	24-hr Sulphur dioxide (µg/m³)	24-hr PM₁₀ (µg/m³)	1-hr Nitrogen dioxide (µg/m³)^a	8-hr Ozone (µg/m³)	8-hr Carbon monoxide (mg/m³)	24-hr PM_2.5 (µg/m³)
North	6(4)	25(25)	43(-)	15(6)	0.5(5)	14(53)
South	15(9)	18(18)	30(-)	14(6)	0.3(3)	12(51)
East	11(7)	16(16)	19(-)	18(8)	0.7(7)	11(45)
West	30(19)	32(32)	80(-)	12(5)	0.4(4)	17(57)
Central	8(5)	19(19)	38(-)	15(6)	0.4(4)	10(42)

1-hr PM_2.5 (µg/m³)^b Readings on 30 Jul 2015

View reading for:

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	9	12	6	8	9	11	12	12	11	14	18	22
South	13	13	14	10	9	9	10	9	9	4	14	11
East	9	6	8	8	9	5	6	10	7	12	14	14
West	8	11	12	11	7	6	18	21	28	23	18	14
Central	12	6	8	8	5	6	4	17	14	10	12	10
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	15	18	23	15	15	9	13	11	12	24	26	17
South	8	13	16	14	9	11	17	14	20	11	17	17
East	13	12	10	10	7	16	14	18	12	11	16	13
West	16	24	25	19	20	27	21	12	17	26	15	19
Central	13	16	15	11	9	10	8	8	10	9	12	7

Note:
^a Sub-index for nitrogen dioxide is reported only when the 1-hour concentration exceeds 1130 µg/m³.
^b There is no sub-index for 1-h PM_2.5.

3-hr PSI Readings from 1am to 12am on 30 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	39	43	41	40	37	34	35	44	51	52	53	53
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	53	54	55	55	54	53	53	53	53	54	55	55

The real-time data is automatically published as soon as it is generated by our air monitoring stations. The data is subject to verification and correction subsequently if necessary.

Contact Us

Hotline	1800 CALL NEA (1800-225 5632)
Weather	6542 7788
Fax	6235 2611
Feedback

Our Location

Main Office
Customer Service Centre
Other Offices

National Environment Agency
40 Scotts Road, #13-00
Environment Building
Singapore 228231

Customer Service Centre
40 Scotts Road #02-00
Environment Building
Singapore 228231
Customer Service Centre (Hawkers)
HDB Hub, East Wing, #26-01
480 Lorong 6 Toa Payoh
Singapore 310480